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1. (Zn, Ni, Cu)-BTC Functionalized with Phosphotungstic Acid for Adsorptive Desulfurization in the Presence of Benzene and Ketone

Author:
Wei Dai; Ning Tian; Congmin Liu; Le Yu; Qing Liu; Na Ma; Yuexing Zhao
Source:
Energy & fuels 2017 v.31 no.12 pp. 13502-13508
ISSN:
1520-5029
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; acetone; adsorbents; adsorption; atomic absorption spectrometry; benzene; coordination polymers; copper; desorption; desulfurization; fuels; nickel; nitrogen; phosphotungstic acid; scanning electron microscopy; zinc
Abstract:
... A novel composite adsorbent, PTA@(Zn, Ni, Cu)-BTC, was prepared by (Zn, Ni, Cu)-BTC doped with different amounts of phosphotungstic acid (PTA) using an impregnation method. Apparatus like nitrogen adsorption–desorption, X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared (FT-IR), inductively coupled plasma optical emission spectroscopy (ICP-OES), and NH₃-tempera ...
DOI:
10.1021/acs.energyfuels.7b02851

2. 1,3,5-Triazine-2,4,6-tribenzaldehyde derivative as a new crosslinking agent for synthesis of pH-thermo dual responsive chitosan hydrogels and their nanocomposites: Swelling properties and drug release behavior

Author:
Ali Reza Karimi; Mahsa Tarighatjoo; Golara Nikravesh
Source:
International journal of biological macromolecules 2017 pp. -
ISSN:
0141-8130
Subject:
Fourier transform infrared spectroscopy; aldehydes; carbon nanotubes; chitosan; cross-linking reagents; crosslinking; drugs; hydrogels; metronidazole; models; nanocomposites; nuclear magnetic resonance spectroscopy; pH; scanning electron microscopy; temperature
Abstract:
... In this work, 1,3,5-triazine-2,4,6-tribenzaldehyde was synthesized and chosen as the cross-linking agent for preparation of novel thermo- and pH-responsive hydrogels based on chitosan. The cross-linking proceeds through formation of imine bond by reaction of amino groups of chitosan with aldehyde groups of the cross-linker. The various amounts (6, 10, 14% w/w) of the cross-linker were used with re ...
DOI:
10.1016/j.ijbiomac.2017.07.128

3. 1,5-Benzodiazepine synthesis via cyclocondensation of 1,2-diamines with ketones using iron-based metal–organic framework MOF-235 as an efficient heterogeneous catalyst

Author:
Thuan D. Le; Khoa D. Nguyen; Vu T. Nguyen; Thanh Truong; Nam T.S. Phan
Source:
Journal of catalysis 2016 v.333 pp. 94-101
ISSN:
0021-9517
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; air; atomic absorption spectrometry; catalysts; catalytic activity; centrifugation; coordination polymers; ketones; nitrogen; oxidants; oxygen; scanning electron microscopy; thermogravimetry; transmission electron microscopy
Abstract:
... A crystalline iron-based metal–organic framework MOF-235 was synthesized, and characterized by X-ray powder diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), thermogravimetric analysis (TGA), Fourier transform infrared (FT-IR), atomic absorption spectrophotometry (AAS), and nitrogen physisorption measurements. The MOF-235 could be used as a heterogeneou ...
DOI:
10.1016/j.jcat.2015.10.026

4. 1-Butyl-3-methylimidazolium chloride pretreatment of cotton stalk and structure characterization

Author:
Wei Xie; Dayun Zhou; Yanjing Ren; Shurong Tang; Meng Kuang; Shuang-kui Du
Source:
Renewable energy 2018 v.125 pp. 668-674
ISSN:
0960-1481
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; biomass; chlorides; cotton; crystal structure; liquids; reducing sugars; renewable energy sources; scanning electron microscopy; temperature
Abstract:
... Cotton stalk was pretreated with 1-butyl-3-methyimidazolium chloride ([Bmim]Cl) and the effect of pretreatment factors, including liquid/solid ratio, temperature, and pretreatment duration on cotton stalk was investigated. Scanning electronic microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction were used to identify structural changes in native and pretreated biomass. The opt ...
DOI:
10.1016/j.renene.2018.03.011

5. 12-Molybdophosphoric acid anchored on aminopropylsilanized magnetic graphene oxide nanosheets (Fe₃O₄/GrOSi(CH₂)₃–NH₂/H₃PMo₁₂O₄₀): a novel magnetically recoverable solid catalyst for H₂O₂-mediated oxidation of benzylic alcohols under solvent-free conditions

Author:
Saeed Farhadi; Mohammad Hakimi; Mansoureh Maleki
Source:
RSC advances 2018 v.8 no.13 pp. 6768-6780
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; anions; benzaldehyde; benzyl alcohol; catalysts; catalytic activity; electron transfer; energy-dispersive X-ray analysis; graphene oxide; hydrogen peroxide; ketones; magnetic materials; magnetism; nanocomposites; nanosheets; nitrogen; oxidation; scanning electron microscopy; surface area
Abstract:
... In this work, 12-molybdophosphoric acid (H₃PMo₁₂O₄₀, HPMo) was chemically anchored onto the surface of aminosilanized magnetic graphene oxide (Fe₃O₄/GrOSi(CH₂)₃–NH₂) and was characterized using different physicochemical techniques, such as powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy, energy-dispersive X-ray analysis (EDX), scanning electron m ...
DOI:
10.1039/c8ra00312b

6. 1D/2D MnWO4 nanorods anchored on g-C3N4 nanosheets for enhanced photocatalytic degradation ofloxacin under visible light irradiation

Author:
Lakshmi Prabavathi S.; Saravanakumar K.; Gcina Mamba; Muthuraj V.
Source:
Colloids and surfaces 2019 v.581 pp. 123845
ISSN:
0927-7757
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; anions; carbon nitride; carbonates; catalysts; chemical composition; chlorides; energy-dispersive X-ray analysis; hot water treatment; irradiation; light; nanocomposites; nanorods; nanosheets; ofloxacin; optical properties; photocatalysis; pollutants; pollution control; scanning electron microscopy; sulfates; transmission electron microscopy; ultrasonic treatment
Abstract:
... Herein, MnWO₄ nanorods coupled with g-C₃N₄ nanosheets were fabricated by a simple hydrothermal method, followed by an ultrasonication method. Morphological features, chemical composition, optical properties and crystallographic information of the prepared materials were obtained using SEM-EDX, TEM, XRD, XPS, FT-IR, UV–vis DRS, and PL techniques. The synthesized MnWO₄@g-C₃N₄ nanocomposite displayed ...
DOI:
10.1016/j.colsurfa.2019.123845

7. 2,4-Dichlorophenoxyacetic acid herbicide photocatalytic degradation by zero-valent iron / titanium dioxide based on activated carbon

Author:
Shahrokh Jokar Baloochi; Ali Reza Solaimany Nazar; Mehrdad Farhadian
Source:
Environmental nanotechnology, monitoring & management 2018 v.10 pp. 212-222
ISSN:
2215-1532
Subject:
2,4-D; Fourier transform infrared spectroscopy; X-ray diffraction; activated carbon; energy-dispersive X-ray analysis; experimental design; hydrogen peroxide; iron; irradiation; monitoring; nanocomposites; nanotechnology; pH; photocatalysis; response surface methodology; scanning electron microscopy; titanium dioxide
Abstract:
... The sol-gel procedure is applied to prepare zero-valent iron/dioxide titanium nanocomposite based on activated carbon and the nanocomposite is characterized by XRF, XRD, FT-IR, BET, FE-SEM and EDX analysis. The response surface methodology (RSM) of experimental design is adopted to evaluate the effects of five operational factors, including 2,4-D initial concentration, nanocomposite concentration, ...
DOI:
10.1016/j.enmm.2018.07.008

8. 2,4-Dinitrophenylhydrazine functionalized sodium dodecyl sulfate-coated magnetite nanoparticles for effective removal of Cd(II) and Ni(II) ions from water samples

Author:
Soheil Sobhanardakani; Raziyeh Zandipak
Source:
Environmental monitoring and assessment 2015 v.187 no.7 pp. 412
ISSN:
0167-6369
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; aqueous solutions; cadmium; cations; magnetite; models; nanoparticles; nickel; pH; river water; sampling; scanning electron microscopy; sodium; sodium dodecyl sulfate; tap water; temperature; testing; wastewater
Abstract:
... 2,4-Dinitrophenylhydrazine immobilized on sodium dodecyl sulfate (SDS)-coated magnetite and was used for removal of Cd(II) and Ni(II) ions from aqueous solution. The prepared product was characterized by X-ray diffraction (XRD) analysis, Fourier transform infrared spectroscopy (FT-IR), and scanning electron microscopy (SEM). The size of the nanoparticles according to SEM was obtained around 20–35  ...
DOI:
10.1007/s10661-015-4635-y

9. 2,6-Dinitroaniline and β-cyclodextrin inclusion complex properties studied by different analytical methods

Author:
Krishnan Srinivasan; Krishnamoorthy Sivakumar; Thambusamy Stalin
Source:
Carbohydrate polymers 2014 v.113 pp. 577-587
ISSN:
0144-8617
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; acidity; beta-cyclodextrin; electrochemistry; molecular models; nuclear magnetic resonance spectroscopy; scanning electron microscopy; spectrophotometers; thermodynamics
Abstract:
... The formation of supramolecular host-guest inclusion complex of 2,6-Dinitroaniline (2,6-DNA) with nano-hydrophobic cavity of β-cyclodextrin (β-CD) in solution phase were studied by UV-visible spectrophotometer and electrochemical method (cyclic voltammetry, CV). The prototropic behaviors of 2,6-DNA with and without β-CD and the ground state acidity constant (pKa) of host-guest inclusion complex (2 ...
DOI:
10.1016/j.carbpol.2014.07.062

10. 2-Nitrophenol sensor-based wet-chemically prepared binary doped Co₃O₄/Al₂O₃ nanosheets by an electrochemical approach

Author:
Mohammed M. Rahman; M. M. Alam; Abdullah M. Asiri
Source:
RSC advances 2018 v.8 no.2 pp. 960-970
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; coprecipitation; detection limit; electrochemistry; energy-dispersive X-ray analysis; glassy carbon electrode; health services; nanosheets; nitrophenols; pH; scanning electron microscopy; ultraviolet-visible spectroscopy
Abstract:
... Herein, the wet-chemical process (co-precipitation) was used to prepare nanosheets (NSs) of Co₃O₄/Al₂O₃ in an alkaline medium (pH ∼ 10.5). The synthesized NSs were totally characterized by Fourier-transform infrared spectroscopy (FTIR), ultraviolet visible spectroscopy (UV/vis), field emission scanning electron microscopy (FESEM), energy-dispersive X-ray spectroscopy (EDS), X-ray photoelectron spe ...
DOI:
10.1039/c7ra10866d

11. 2D Self-assembly of an amido-ended hyperbranched polyester induced by platinum ion coordination effect

Author:
Daohong Zhang; Junna Li; Jing Wang; Sufang Chen; Jiliang Zhou; Tingcheng Li; Junheng Zhang; Aiqing Zhang; Chuanjun Liu
Source:
RSC advances 2013 v.3 no.38 pp. 17073-17080
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; glass; humidity; hydrogen bonding; hydrophilicity; light microscopy; light scattering; micelles; oxygen; platinum; polyesters; scanning electron microscopy; solvents; temperature
Abstract:
... Compared with amphiphilic hyperbranched polymers (HBPs), the self-assembly of hydrophilic HBPs remains a challenging area. In this article, we report the self-assembly of an amido-ended, hydrophilic hyperbranched polyester (HTDA-2), by taking advantage of the induction effect of the platinum ion. Self-assembled HTDA-2-Pt polymers are composed of ordered 2D tree-like structures with a diameter of a ...
DOI:
10.1039/c3ra42057d

12. 2D-2D growth of NiFe LDH nanoflakes on montmorillonite for cationic and anionic dye adsorption performance

Author:
De Bin Jiang; Chuan Jing; Yunsong Yuan; Li Feng; Xiaoying Liu; Fan Dong; Biqing Dong; Yu Xin Zhang
Source:
Journal of colloid and interface science 2019 v.540 pp. 398-409
ISSN:
0021-9797
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; differential thermal analysis; hot water treatment; hydroxides; methyl orange; methylene blue; models; montmorillonite; scanning electron microscopy; surface area; thermogravimetry; wastewater
Abstract:
... NiFe layered double hydroxides nanoflakes decorated montmorillonite (MMT@NiFe LDH) was successfully prepared by a one-pot hydrothermal method. The 2D-2D growth MMT@NiFe LDH was utilized as an effective adsorbent for removal of anionic dye of methyl orange (MO) and cationic dye of methylene blue (MB). The mole ratio of Ni2+/Fe3+ could quite influence the interlayer spacing, surface area per unit ch ...
DOI:
10.1016/j.jcis.2019.01.022

13. 3,4-Diaminotoluene sensor development based on hydrothermally prepared MnCoxOy nanoparticles

Author:
Mohammed M. Rahman; M.M. Alam; Abdullah M. Asiri; M.A. Islam
Source:
Talanta 2018 v.176 pp. 17-25
ISSN:
0039-9140
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; ambient temperature; energy-dispersive X-ray analysis; glassy carbon electrode; health services; nanoparticles; scanning electron microscopy; toxins; ultraviolet-visible spectroscopy
Abstract:
... A facile hydrothermal process was used to prepare MnCoₓOy nanoparticles (NPs) in alkaline medium (pH~10.5) at room temperature. The NPs were characterized by Fourier-transform infrared spectroscopy (FTIR), ultraviolet visible spectroscopy (UV/vis), field emission scanning electron microscopy (FESEM), X-ray photoelectron spectroscopy (XPS), energy-dispersive X-ray spectroscopy (EDS), and powder X-r ...
DOI:
10.1016/j.talanta.2017.07.093

14. 3-D mineralized silk fibroin/polycaprolactone composite scaffold modified with polyglutamate conjugated with BMP-2 peptide for bone tissue engineering

Author:
Jingjing Luo; Haitao Zhang; Jiang zhu; Xiaokang Cui; Junjiu Gao; Xin Wang; Jie Xiong
Source:
Colloids and surfaces 2018 v.163 pp. 369-378
ISSN:
0927-7765
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; binding properties; bone formation; bones; colloids; extracellular matrix; fibroins; gene expression; genes; glutamic acid; messenger RNA; mineralization; nanofibers; scanning electron microscopy; silk; stem cells; tissue engineering
Abstract:
... In the field of bone tissue engineering, an ideal three-dimensional (3-D) scaffold should not only structurally mimic the extracellular matrix (ECM) in large tissues but also mechanically support the bone healing process and provide biochemical cues to induce osteogenesis. In this study, we investigated the feasibility of functionalisation of scaffolds by coupling polyglutamate acid conjugated wit ...
DOI:
10.1016/j.colsurfb.2017.12.043

15. 3-mercaptopropyltrimethoxysilane-Modified Multi-walled Carbon Nanotubes as a New Functional Adsorbent for Flow Injection Extraction of Pb(II) from Water and Sediment Samples

Author:
Bruna Fabrin Somera; Marcela Zanetti Corazza; Maria Josefa Santos Yabe; Mariana Gava Segatelli; Evgeny Galunin; César Ricardo Teixeira Tarley
Source:
Water, air, and soil pollution 2012 v.223 no.9 pp. 6069-6081
ISSN:
0049-6979
Subject:
Fourier transform infrared spectroscopy; adsorption; aqueous solutions; atomic absorption spectrometry; buffers; carbon nanotubes; detection limit; energy; pH; scanning electron microscopy; sediments; solid phase extraction
Abstract:
... In the present study, a novel synthesized adsorbent material based on 3-mercaptopropyltrimethoxysilane-functionalized multi-walled carbon nanotubes was used to increase the Pb²⁺ adsorption from aqueous solutions in a flow injection solid-phase extraction system coupled to flame atomic absorption spectrometry. Spectroscopic and microscopic techniques (Fourier transform infrared spectroscopy, energy ...
DOI:
10.1007/s11270-012-1341-z

16. 3D NiCr-layered double hydroxide/reduced graphene oxide sand rose-like structure as bifunctional electrocatalyst for methanol oxidation

Author:
Shimaa Gamil; Manuel Antuch; I.T. Zedan; Waleed M.A. El Rouby
Source:
Colloids and surfaces 2020 v.602 pp. 125067
ISSN:
0927-7757
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; catalysts; catalytic activity; electrochemistry; graphene oxide; mass transfer; methanol; microwave treatment; nanocomposites; oxidation; sand; scanning electron microscopy; transmission electron microscopy
Abstract:
... Three-dimensional (3D) structures are currently a topic of considerable interest due to their extraordinary properties. In this work, a 3D hybrid nanocomposite nickel-chromium layered double hydroxide (NiCr-LDH) was in-situ synthesized on different concentrations of reduced graphene oxide (rGO) using a microwave-assisted method. The structural and morpholological analysis of the as-prepared nanoco ...
DOI:
10.1016/j.colsurfa.2020.125067

17. 3D free-standing porous scaffolds made of graphene oxide as substrates for neural cell growth

Author:
M. C. Serrano; J. Patiño; C. García-Rama; M. L. Ferrer; J. L. G. Fierro; A. Tamayo; J. E. Collazos-Castro; F. del Monte; M. C. Gutiérrez
Source:
Journal of materials chemistry B 2014 v.2 no.34 pp. 5698-5706
ISSN:
2050-7518
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray photoelectron spectroscopy; adhesion; axons; cell growth; central nervous system; dendrites; graphene; graphene oxide; hydrophilicity; medicine; neural stem cells; neuroglia; scanning electron microscopy; tissue repair; viability
Abstract:
... The absence of efficient therapies for the treatment of lesions affecting the central nervous system encourages scientists to explore new materials in an attempt to enhance neural tissue regeneration while preventing inhibitory fibroglial scars. In recent years, the superlative properties of graphene-based materials have provided a strong incentive for their application in biomedicine. Nonetheless ...
DOI:
10.1039/c4tb00652f

18. 3D metal-organic framework as highly efficient biosensing platform for ultrasensitive and rapid detection of bisphenol A

Author:
Xue Wang; Xianbo Lu; Lidong Wu; Jiping Chen
Source:
Biosensors & bioelectronics 2015 v.65 pp. 295-301
ISSN:
0956-5663
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; absorption; biosensors; bisphenol A; detection limit; electrochemistry; endocrine-disrupting chemicals; rapid methods; scanning electron microscopy; surface area; transmission electron microscopy
Abstract:
... As is well known, bisphenol A (BPA), usually exists in daily plastic products, is one of the most important endocrine disrupting chemicals. In this work, copper-centered metal-organic framework (Cu-MOF) was synthesized, which was characterized by SEM, TEM, XRD, FTIR and electrochemical method. The resultant Cu-MOF was explored as a robust electrochemical biosensing platform by choosing tyrosinase ...
DOI:
10.1016/j.bios.2014.10.010

19. 3D spongy graphene-modified screen-printed sensors for the voltammetric determination of the narcotic drug codeine

Author:
Mona A. Mohamed; Dalia M. El-Gendy; Nashaat Ahmed; Craig E. Banks; Nageh K. Allam
Source:
Biosensors & bioelectronics 2018 v.101 pp. 90-95
ISSN:
0956-5663
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; acetaminophen; biosensors; caffeine; chemical oxygen demand; codeine; detection limit; drug formulations; electrodes; graphene; phosphates; scanning electron microscopy; thermogravimetry; transmission electron microscopy; ultraviolet-visible spectroscopy
Abstract:
... Adenine-functionalized spongy graphene (FSG) composite, fabricated via a facile and green synthetic method, has been explored as a potential electrocatalyst toward the electroanalytical sensing of codeine phosphate (COD). The synthesized composite is characterized using Fourier transform infrared spectroscopy (FTIR), Raman spectroscopy, X-ray powder diffraction, UV−vis absorption spectroscopy, sca ...
DOI:
10.1016/j.bios.2017.10.020

20. 3D structures of hydroxyapatite obtained from Rapana venosa shells using hydrothermal synthesis followed by 3D printing

Author:
Ana Maria Mocioiu; Raluca Tutuianu; Laura Madalina Cursaru; Roxana Mioara Piticescu; Paul Stanciu; Bogdan Stefan Vasile; Roxana Trusca; Viviana Sereanu; Aurelia Meghea
Source:
Journal of materials science 2019 v.54 no.22 pp. 13901-13913
ISSN:
0022-2461
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; calcium; calcium carbonate; cell viability; coasts; cytotoxicity; hydroxyapatite; in vitro studies; light scattering; powders; raw materials; scanning electron microscopy; three-dimensional printing; wastes; Black Sea
Abstract:
... In this study, hydroxyapatite (HAp) obtained by hydrothermal synthesis from natural sources (whelk shells of Rapana thomasiana) was compared to synthetic hydroxyapatite (prepared from chemical reagents) and used for 3D printing of HAp-based structures. Rapana thomasiana can be found in Romanian coast of Black Sea. The visceral part of Rapana is used for culinary purposes, but the whelk shell, main ...
DOI:
10.1007/s10853-019-03872-3

21. 3D urchin-like black TiO₂₋ₓ/carbon nanotube heterostructures as efficient visible-light-driven photocatalysts

Author:
Yuchi Zhang; Zipeng Xing; Jinlong Zou; Zhenzi Li; Xiaoyan Wu; Liyan Shen; Qi Zhu; Shilin Yang; Wei Zhou
Source:
RSC advances 2017 v.7 no.1 pp. 453-460
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; absorption; active sites; chemical reduction; electrochemistry; hydrogen production; light scattering; nanotubes; photocatalysis; photocatalysts; reflectance spectroscopy; scanning electron microscopy; titanium; titanium dioxide; transmission electron microscopy
Abstract:
... 3D urchin-like black TiO₂₋ₓ/CNT heterostructures are successfully fabricated via a facile one-pot solvothermal reaction combined with a subsequent in situ solid-state chemical reduction approach. The as-prepared photocatalysts are characterized in detail via X-ray diffraction, Raman spectroscopy, Fourier transform infrared spectroscopy, scanning electron microscopy, transmission electron microscop ...
DOI:
10.1039/c6ra25611b

22. 3D-macroporous chitosan-based scaffolds with in situ formed Pd and Pt nanoparticles for nitrophenol reduction

Author:
Dmitriy Berillo; Andrew Cundy
Source:
Carbohydrate polymers 2018 v.192 pp. 166-175
ISSN:
0144-8617
Subject:
Fourier transform infrared spectroscopy; adsorption; ambient temperature; catalysts; catalytic activity; chitosan; cryogels; electrostatic interactions; energy-dispersive X-ray analysis; glutaraldehyde; metal ions; models; nanoparticles; nitrogen; p-nitrophenol; palladium; platinum; scanning electron microscopy; transmission electron microscopy
Abstract:
... 3D-macroporous chitosan-based scaffolds (cryogels) were produced via growth of metal-polymer coordinated complexes and electrostatic interactions between oppositely charged groups of chitosan and metal ions under subzero temperatures. A mechanism of reduction of noble metal complexes inside the cryogel walls by glutaraldehyde is proposed, which produces discrete and dispersed noble metal nanoparti ...
DOI:
10.1016/j.carbpol.2018.03.038

23. 3D-porous β-LiVOPO₄/C microspheres as a cathode material with enhanced performance for Li-ion batteries

Author:
Chao Shen; Bao Zhang; Jia-feng Zhang; Jun-chao Zheng; Ya-dong Han; Hui Li
Source:
RSC advances 2015 v.5 no.10 pp. 7208-7214
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; carbon; cathodes; coatings; crystal structure; crystallization; differential scanning calorimetry; electron transfer; encapsulation; lithium batteries; microparticles; powders; scanning electron microscopy; surface area; thermogravimetry; transmission electron microscopy
Abstract:
... 3D porous β-LiVOPO₄/C microspheres were synthesized through a solvothermal method followed by a post-heat treatment. TG-DSC and FTIR results illustrate crystal structure transformation from α→β-LiVOPO₄. XRD results reveal pristine and synthesized powders that were crystallized in the triclinic α-LiVOPO₄ and orthorhombic β-LiVOPO₄ phase, respectively. Scanning electron microscopy (SEM) and pore dis ...
DOI:
10.1039/c4ra12469c

24. 3‑Mercapto‑propanoic acid modified cellulose filter paper for quick removal of arsenate from drinking water

Author:
Krishnendu Pramanik; Priyabrata Sarkar; Dipankar Bhattacharyay
Source:
International journal of biological macromolecules 2019 v.122 pp. 185-194
ISSN:
0141-8130
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; adsorbents; adsorption; arsenates; cellulose; chemical bonding; drinking water; energy-dispersive X-ray analysis; esterification; groundwater; ion exchange; kinetics; pH; paper; scanning electron microscopy; sorption isotherms; water pollution
Abstract:
... This paper reports a simple, facile and rapid preparation of 3‑mercapto‑propanoic acid (MPA) modified cellulose filter paper (MPA-Cell paper) for arsenate removal from drinking water. The MPA was covalently grafted to the cellulose filter paper (Cell) by esterification process through the formation of O‑acylisourea intermediate and characterized by the FTIR, SEM, EDS and XPS analyses. The arsenate ...
DOI:
10.1016/j.ijbiomac.2018.10.065

25. 4-(6-Aminohexyl) amino-4-oxo-2-butenoic acid as a novel hydrophilic monomer for synthesis of cellulose-based superabsorbents with high water absorption capacity

Author:
Negar Etminani-Isfahani; Zahra Mohammadbagheri; Abbas Rahmati
Source:
Carbohydrate polymers 2020 v.250 pp. 116959
ISSN:
0144-8617
Subject:
Fourier transform infrared spectroscopy; absorbents; acrylic acid; free radicals; hydrophilicity; pH; polymerization; rheology; scanning electron microscopy; sodium chloride; thermal properties; thermogravimetry; viscoelasticity; water binding capacity; water conservation; water holding capacity
Abstract:
... An efficient cellulosic superabsorbent based on a novel functional monomer 4-(6-aminohexyl) amino-4-oxo-2-butenoic acid (AHOB) and acrylic acid was successfully synthesized by free-radical solution polymerization and the effect of the AHOB monomer on the structure, morphology, thermal behavior and viscoelastic features of this superabsorbent was investigated by FTIR, SEM, TGA and rheology methods. ...
DOI:
10.1016/j.carbpol.2020.116959

26. 4-(Ethoxycarbonyl) phenyl-1-amino-oxobutanoic acid–chitosan complex as a new matrix for silver nanocomposite film: Preparation, characterization and antibacterial activity

Author:
Rohit Srivastava; Dilip K. Tiwari; P.K. Dutta
Source:
International journal of biological macromolecules 2011 v.49 no.5 pp. 863-870
ISSN:
0141-8130
Subject:
Escherichia coli; Fourier transform infrared spectroscopy; Pseudomonas aeruginosa; Staphylococcus aureus; X-ray diffraction; antibacterial properties; bacteria; chitosan; differential scanning calorimetry; nanocomposites; nanosilver; scanning electron microscopy; silver; thermogravimetry
Abstract:
... The present work describes the preparation of new chitosan complex with 4-(ethoxycarbonyl) phenyl-1-amino-oxobutanoic acid (ETHA), as a matrix for silver nanoparticles to obtain a nanocomposite film by solution casing method. The characterization of the prepared nanocomposite film was made by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), differential scanning calorimetry ...
DOI:
10.1016/j.ijbiomac.2011.07.015

27. 4-Chloro-2-((furan-2-ylmethyl) amino)-5-sulfamoylbenzoic Acid (FSM) and N-(Isopropylcarbamoyl)-4-(m-tolylamino) Pyridine-3-sulfonamide (TSM) as Potential Inhibitors for Mild Steel Corrosion in 1 N H2SO4 Medium. Part I

Author:
Sappani Hari Kumar; Karthikeyan Sambantham
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.9 pp. 3415-3425
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; absorption; adsorption; corrosion; drugs; electrochemistry; engineering; scanning electron microscopy; sorption isotherms; spectral analysis; steel; sulfuric acid; temperature; thermodynamics; weight loss
Abstract:
... 4-Chloro-2-((furan-2-ylmethyl)amino)-5-sulfamoylbenzoic acid (FSM) and N-(isopropylcarbamoyl)-4-(m-tolylamino)pyridine-3-sulfonamide (TSM) drugs were tested as inhibitors for mild steel corrosion in 1 N sulphuric acid solution by weight loss studies and electrochemical methods. The weight loss measurements were carried at different temperatures ranging from 303 to 333 K. In all the studies, Inhibi ...
DOI:
10.1021/ie401956y

28. 4-Phosphatephenyl-modified glassy carbon electrode for real-time and simultaneous electrochemical monitoring of paracetamol and diclofenac release from electrospun nanofibers

Author:
Tingting Zhou; Lili Li; Jiabo Wang; Xuesong Chen; Guocheng Yang; Yuping Shan
Source:
Analytical methods 2015 v.7 no.21 pp. 9289-9294
ISSN:
1759-9679
Subject:
Fourier transform infrared spectroscopy; acetaminophen; diclofenac; drug delivery systems; electrochemistry; glassy carbon electrode; monitoring; nanofibers; scanning electron microscopy
Abstract:
... An effective electrochemical platform was set up for the real-time and simultaneous monitoring of the kinetics of drug release from electrospun nanofibers. The method describes the development and utilization of a 4-phosphatephenyl (4-PP)-modified glassy carbon electrode (GCE). The modified electrode was used to monitor paracetamol (PCT) and/or diclofenac (DCF) release from electrospun nanofibers. ...
DOI:
10.1039/c5ay02112j

29. 4-phenyl-1,2,3-triazole functionalized mesoporous silica SBA-15 as sorbent in an efficient stir bar-supported micro-solid-phase extraction strategy for highly to moderately polar phenols

Author:
Abdulkadir Tanimu; Shehzada Muhammad Sajid Jillani; Ayman A. Alluhaidan; Saheed A. Ganiyu; Khalid Alhooshani
Source:
Talanta 2019 v.194 pp. 377-384
ISSN:
0039-9140
Subject:
Fourier transform infrared spectroscopy; azides; desorption; detection limit; ethyl acetate; gas chromatography-mass spectrometry; ionic strength; moieties; nuclear magnetic resonance spectroscopy; phenols; porosity; porous media; scanning electron microscopy; silica; sodium chloride; solvents; sorbents; statistical analysis; surface area; triazoles; wastewater
Abstract:
... A simple and effective strategy for the extraction of highly to moderately polar phenols in water samples was developed by synthesizing a series of 4-phenyl-1,2,3-triazole functionalized SBA-15 sorbents (xN₃-Ph-SBA-15; x = 2 – 10 wt%) via two steps: azide functionalization of SBA-15 and its click reaction with phenylacetylene. The formed sorbents, which have a blend of both polar (1,2,3-triazole) ...
DOI:
10.1016/j.talanta.2018.10.012

30. 45S5Bioglass®-based scaffolds coated with selenium nanoparticles or with poly(lactide-co-glycolide)/selenium particles: Processing, evaluation and antibacterial activity

Author:
Magdalena Stevanović; Nenad Filipović; Jelena Djurdjević; Miodrag Lukić; Marina Milenković; Aldo Boccaccini
Source:
Colloids and Surfaces B: Biointerfaces 2015 v.132 pp. 208-215
ISSN:
0927-7765
Subject:
Fourier transform infrared spectroscopy; Gram-positive bacteria; Staphylococcus aureus; Staphylococcus epidermidis; X-ray diffraction; antibacterial properties; antioxidants; antiviral properties; bones; cell proliferation; colloids; energy-dispersive X-ray analysis; foams; glass; monitoring; nanoparticles; new family; orthopedics; scanning electron microscopy; selenium; tissue engineering; transmission electron microscopy
Abstract:
... In the bone tissue engineering field, there is a growing interest in the application of bioactive glass scaffolds (45S5Bioglass®) due to their bone bonding ability, osteoconductivity and osteoinductivity. However, such scaffolds still lack some of the required functionalities to enable the successful formation of new bone, e.g. effective antibacterial properties. A large number of studies suggest ...
DOI:
10.1016/j.colsurfb.2015.05.024

31. 5-Fluorouracil loaded fibrinogen nanoparticles for cancer drug delivery applications

Author:
N. Sanoj Rejinold; M. Muthunarayanan; K.P. Chennazhi; S.V. Nair; R. Jayakumar
Source:
International journal of biological macromolecules 2011 v.48 no.1 pp. 98-105
ISSN:
0141-8130
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; atomic force microscopy; calcium chloride; cell lines; cytotoxicity; drug delivery systems; fibrinogen; fluorouracil; in vitro studies; nanoparticles; particle size; scanning electron microscopy; ultraviolet-visible spectroscopy
Abstract:
... In this study, 5-flurouracil loaded fibrinogen nanoparticles (5-FU-FNPs) were prepared by two step coacervation method using calcium chloride as cross-linker. The prepared nanoparticles were characterized using DLS, SEM, AFM, FT-IR, TG/DTA and XRD studies. Particle size of 5-FU-FNPs was found to be 150–200nm. The loading efficiency (LE) and in vitro drug release was studied using UV spectrophotome ...
DOI:
10.1016/j.ijbiomac.2010.10.003

32. 5‑Fluorouracil loaded chitosan/polyacrylic acid/Fe3O4 magnetic nanocomposite hydrogel as a potential anticancer drug delivery system

Author:
Mohammad Sadegh Amini-Fazl; Reza Mohammadi; Karim Kheiri
Source:
International journal of biological macromolecules 2019 v.132 pp. 506-513
ISSN:
0141-8130
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; chitosan; colon; drug delivery systems; drug therapy; fluorouracil; hydrogels; magnetism; nanocomposites; neoplasms; scanning electron microscopy; thermogravimetry
Abstract:
... In most cancer treatments, chemotherapy is currently necessary; hence, more attention was devoted to developing new methods for designing drug delivery systems (DDS) with controlled drug release. For this aim, anticancer 5‑fluorouracil (5-FU) drug was loaded into chitosan/polyacrylic acid/Fe3O4 magnetic nanocomposite hydrogel (CS/PAA/Fe3O4) through immersing in the drug solution. The prepared CS/P ...
DOI:
10.1016/j.ijbiomac.2019.04.005

33. 8-Hydroxy-2-methylquinoline-modified H₄SiW₁₂O₄₀: a reusable heterogeneous catalyst for acetal/ketal formation

Author:
Li-jun Liu; Qing-jie Luan; Jing Lu; Dong-mei Lv; Wen-zeng Duan; Xu Wang; Shu-wen Gong
Source:
RSC advances 2018 v.8 no.46 pp. 26180-26187
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; catalysts; catalytic activity; cyclohexanones; scanning electron microscopy; temperature; thermogravimetry; titration
Abstract:
... A heteropoly acid based organic hybrid heterogeneous catalyst, HMQ-STW, was prepared by combining 8-hydroxy-2-methylquinoline (HMQ) with Keggin-structured H₄SiW₁₂O₄₀ (STW). The catalyst was characterized via elemental analysis, X-ray diffractometry (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), thermogravimetric analysis (TG) and potentiometric titratio ...
DOI:
10.1039/c8ra04471f

34. 8-Hydroxyquinoline as an alternative green and sustainable acidizing oilfield corrosion inhibitor

Author:
I.B. Obot; N.K. Ankah; A.A. Sorour; Z.M. Gasem; K. Haruna
Source:
Sustainable materials and technologies 2017 v.14 pp. 1-10
ISSN:
2214-9937
Subject:
8-hydroxyquinoline; Fourier transform infrared spectroscopy; corrosion; dielectric spectroscopy; electrochemistry; energy-dispersive X-ray analysis; hydrochloric acid; ions; oil fields; scanning electron microscopy; steel; weight loss
Abstract:
... Corrosion inhibition performance of an environmentally friendly compound, 8-hydroxyquinoline (8-HQ), on X60 steel was investigated in 15% hydrochloric acid (HCl), which simulate oil well acidizing environment. Efficacy of the inhibitor was examined utilizing weight loss, potentiodynamic polarization (PDP), electrochemical frequency modulation (EFM), linear polarization (LPR), and electrochemical i ...
DOI:
10.1016/j.susmat.2017.09.001

35. 8-Hydroxyquinoline based chitosan derived carbohydrate polymer as biodegradable and sustainable acid corrosion inhibitor for mild steel: Experimental and computational analyses

Author:
M. Rbaa; M. Fardioui; Chandrabhan Verma; Ashraf S. Abousalem; M. Galai; E.E. Ebenso; T. Guedira; B. Lakhrissi; I. Warad; A. Zarrouk
Source:
International journal of biological macromolecules 2020 v.155 pp. 645-655
ISSN:
0141-8130
Subject:
8-hydroxyquinoline; Fourier transform infrared spectroscopy; Monte Carlo method; adsorption; biodegradability; chitosan; corrosion; density functional theory; electrochemistry; energy-dispersive X-ray analysis; nuclear magnetic resonance spectroscopy; polymers; scanning electron microscopy; spectral analysis; steel; temperature; ultraviolet-visible spectroscopy
Abstract:
... The present study reports the synthesis, characterization and corrosion inhibition effects of chitosan (CH) and its 5-chloromethyl-8-hydroxyquinoline derivative (CH-HQ) for mild steel in acidic medium. The synthesized CH-HQ was characterized using ¹H NMR and FT-IR spectroscopic methods. Corrosion inhibition efficiencies of CH and CH-HQ were measured using electrochemical and chemical techniques. T ...
DOI:
10.1016/j.ijbiomac.2020.03.200

36. 8-hydroxy-2′-deoxyguanosine (8-OHdG) biomarker detection down to picoMolar level on a plastic antibody film

Author:
Gabriela V. Martins; Ana C. Marques; Elvira Fortunato; M. Goreti F. Sales
Source:
Biosensors & bioelectronics 2016 v.86 pp. 225-234
ISSN:
0956-5663
Subject:
Fourier transform infrared spectroscopy; antibodies; biomarkers; biosensors; confocal microscopy; dielectric spectroscopy; electrodes; fluorescein; gold; image analysis; immunoassays; molecular imprinting; polymers; polyphenols; scanning electron microscopy; urine
Abstract:
... An innovative biosensor assembly relying on a simple and straightforward in-situ construction is presented to monitor urinary 8-hydroxy-2′-deoxyguanosine (8-OHdG) down to the pmol/L level. The sensing film of the biosensor consisted of a molecularly imprinted polymer (MIP) layer for 8-OHdG assembled on a gold electrode through electropolymerization of monomer combined with the template.The analyti ...
DOI:
10.1016/j.bios.2016.06.052

37. 8DSS-promoted remineralization of demineralized dentin in vitro

Author:
Kunneng Liang; Shimeng Xiao; Wenyuan Shi; Jianshu Li; Xiao Yang; Yuan Gao; Yaping Gou; Liying Hao; Libang He; Lei Cheng; Xin Xu; Xuedong Zhou; Jiyao Li
Source:
Journal of materials chemistry B 2015 v.3 no.33 pp. 6763-6772
ISSN:
2050-7518
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; atomic force microscopy; biocompatible materials; biomineralization; coatings; enamel; energy-dispersive X-ray analysis; humans; mechanical properties; minerals; nanocrystals; nucleotide sequences; peptides; phosphoproteins; phosphoric acid; saliva; scanning electron microscopy
Abstract:
... Dentin phosphoprotein (DPP) plays an extremely important role in the biomineralization of human tooth. The repetitive nucleotide sequence of aspartate–serine–serine (DSS) is the fundamental unit within DPP, and peptides containing 8 repeats of DSS (8DSS) have been shown to possess the ability to induce remineralization of the demineralized enamel. In this work, we coated the 8DSS peptide on the co ...
DOI:
10.1039/c5tb00764j

38. A 1-D/2-D hybrid nanostructured manganese cobaltite–graphene nanocomposite for electrochemical energy storage

Author:
A. Nirmalesh Naveen; Subramanian Selladurai
Source:
RSC advances 2015 v.5 no.80 pp. 65139-65152
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; capacitance; chemical analysis; electrochemistry; electrodes; energy; graphene; hot water treatment; manganese; nanocomposites; nanowires; reaction kinetics; scanning electron microscopy; strength (mechanics); surface area; transmission electron microscopy
Abstract:
... A unique 1-D/2-D hybrid nanostructured manganese cobaltite–graphene nanocomposite (GMC) was synthesized by a facile hydrothermal method. Successful composite formation was determined from a structural study like XRD and chemical analyses like FTIR and XPS. FESEM and TEM observations of the manganese cobaltite compound reveal the flower like architecture formed by the clusters of MnCo₂O₄.₅ nanowire ...
DOI:
10.1039/c5ra09288d

39. A 31P NMR and TG/DSC-FTIR Investigation of the Influence of Initial pH on Phosphorus Recovery as Struvite

Author:
Ma Ning; Rouff Ashaki A.; Phillips Brian L.
Source:
ACS sustainable chemistry 2014 v.2 no.4 pp. 816-822
ISSN:
2168-0485
Subject:
Fourier transform infrared spectroscopy; adsorption; ammonia; ammonium; fertilizers; magnesium ammonium phosphate; magnesium chloride; nuclear magnetic resonance spectroscopy; pH; particle size; phosphorus; scanning electron microscopy; sodium phosphate; stable isotopes; thermogravimetry; wastes
Abstract:
... Phosphorus can be reclaimed from nutrient-rich sources as the mineral struvite (MgNH₄PO₄·6H₂O) for reuse as fertilizer. This study determines the impact of initial pH (pHᵢ) from 8 to 11 on the fraction of precipitated struvite from a MgCl₂–(NH₄)₂HPO₄–NaCl–H₂O system. The rate of P removal from solution increases with pHᵢ and maximizes at pHᵢ 10. Scanning electron microscopy (SEM) of recovered prec ...
DOI:
10.1021/sc4004746

40. A 3² full factorial design for development and characterization of a nanosponge-based intravaginal in situ gelling system for vulvovaginal candidiasis

Author:
Riyaz Ali M. Osmani; Parthasarathi K. Kulkarni; S. Shanmuganathan; Umme Hani; Atul Srivastava; Prerana M; Chetan G. Shinde; Rohit R. Bhosale
Source:
RSC advances 2016 v.6 no.23 pp. 18737-18750
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; albino; antifungal properties; beta-cyclodextrin; bioadhesion; carbonates; clotrimazole; differential scanning calorimetry; drugs; females; gelation; gels; half life; laboratory animals; particle size; rats; scanning electron microscopy; solubility; therapeutics; transmission electron microscopy; vulvovaginal candidiasis; zeta potential
Abstract:
... Clotrimazole (CTZ) is a Biopharmaceutics Classification System (BCS) Class II drug having a limited therapeutic potential because of its poor aqueous solubility and relatively short half-life. The rationale behind the present research effort was to enhance the solubility and efficacy of CTZ by having it form a complex with hydroxypropyl β-cyclodextrin (HP-β-CD) nanosponges. Nanosponges (NSs) are h ...
DOI:
10.1039/c5ra26218f

41. A Biologically Inspired Hydrophobic Membrane for Application in Pervaporation

Author:
Jullok Nora; Martínez Rodrigo; Wouters Christine; Luis Patricia; Sanz María Teresa; Van der Bruggen Bart
Source:
Langmuir 2013 v.29 no.5 pp. 1510-1516
ISSN:
1520-5827
Subject:
Fourier transform infrared spectroscopy; Prunus laurocerasus; artificial membranes; biomimetics; coatings; contact angle; desorption; epicuticular wax; ethyl acetate; hydrophobicity; image analysis; leaves; odor compounds; pervaporation; polydimethylsiloxane; scanning electron microscopy; silicon
Abstract:
... An artificial polydimethylsiloxane/polyphenylsulfone (PDMS/PPSU) membrane, which emulates the hydrophobic behavior of natural membranes, was synthesized. Hydrophobicity was achieved by coating the membrane surface sublayer using conventional silicon material, which imitates the character of epicuticular wax (EW) of Prunus laurocerasus L. leaves. It was then applied as a separation medium in pervap ...
DOI:
10.1021/la3050253

42. A Bi₂WO₆/Ag₂S/ZnS Z-scheme heterojunction photocatalyst with enhanced visible-light photoactivity towards the degradation of multiple dye pollutants

Author:
Soleiman Mosleh; Kheibar Dashtian; Mehrorang Ghaedi; Maryam Amiri
Source:
RSC advances 2019 v.9 no.52 pp. 30100-30111
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; dyes; irradiation; light; pH; photocatalysis; photocatalysts; pollutants; response surface methodology; scanning electron microscopy; silver sulfide; zinc sulfide
Abstract:
... A novel visible-light-driven Z-scheme heterojunction, Bi₂WO₆/Ag₂S/ZnS, was synthesized and its photocatalytic activity was evaluated for the treatment of a binary mixture of dyes, and its physicochemical properties were characterized using FT-IR, XRD, DRS and FE-SEM techniques. The Bi₂WO₆/Ag₂S/ZnS Z-scheme heterojunctions not only facilitate the charge separation and transfer, but also maintain th ...
DOI:
10.1039/c9ra05372g

43. A Closed-Loop Process from Microwave-Assisted Hydrothermal Degradation of Starch to Utilization of the Obtained Degradation Products as Starch Plasticizers

Author:
Wu Duo; Hakkarainen Minna
Source:
ACS sustainable chemistry 2014 v.2 no.9 pp. 2172-2181
ISSN:
2168-0485
Subject:
Fourier transform infrared spectroscopy; biomass; carbon; carbonization; electrospray ionization mass spectrometry; formic acid; glucose; hydrolysis; hydroxymethylfurfural; image analysis; industrial applications; levulinic acid; microwave treatment; nuclear magnetic resonance spectroscopy; oligosaccharides; plasticizers; recycling; scanning electron microscopy; starch granules; starch products; ultraviolet-visible spectroscopy
Abstract:
... A green closed-loop water-based process for chemical recycling of starch was demonstrated. The process starts from microwave-assisted controllable starch degradation to functional chemicals and continues to utilization of the formed degradation products, glucose and levulinic acid (LA), as starch plasticizers. The degradation process and the effect of process parameters on the formed degradation p ...
DOI:
10.1021/sc500355w

44. A Combinatorial effect of carboxymethyl cellulose based scaffold and microRNA-15b on osteoblast differentiation

Author:
S. Vimalraj; S. Saravanan; M. Vairamani; C. Gopalakrishnan; T.P. Sastry; N. Selvamurugan
Source:
International journal of biological macromolecules 2016 v.93 pp. 1457-1464
ISSN:
0141-8130
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; additive effect; ascorbic acid; biocomposites; bones; carboxymethylcellulose; mice; osteoblasts; regulator genes; scanning electron microscopy; stem cells; tissue engineering; zinc
Abstract:
... The present study was aimed to synthesize and characterize a bio-composite scaffold containing carboxymethyl cellulose (CMC), zinc doped nano-hydroxyapatite (Zn-nHAp) and ascorbic acid (AC) for bone tissue engineering applications. The fabricated bio-composite scaffold was characterized by SEM, FT-IR and XRD analyses. The ability of scaffold along with a bioactive molecule, microRNA-15b (miR-15b) ...
DOI:
10.1016/j.ijbiomac.2015.12.083

45. A Comparative Study of Fouling and Bottom Ash from Woody Biomass Combustion in a Fixed-Bed Small-Scale Boiler and Evaluation of the Analytical Techniques Used

Author:
Lara Febrero; Enrique Granada; David Patiño; Pablo Eguía; Araceli Regueiro
Source:
Sustainability 2015 v.7 no.5 pp. 5819-5837
ISSN:
2071-1050
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray fluorescence spectroscopy; biomass; bottom ash; calcite; calcium; combustion; comparative study; energy-dispersive X-ray analysis; fouling; magnesium oxide; melting point; organic matter; potassium; potassium chloride; scanning electron microscopy; silica; silicates; temperature; wood products
Abstract:
... In this work, fouling and bottom ash were collected from a low-power boiler after wood pellet combustion and studied using several analytical techniques to characterize and compare samples from different areas and determine the suitability of the analysis techniques employed. TGA results indicated that the fouling contained a high amount of organic matter (70%). The XRF and SEM-EDS measurements re ...
DOI:
10.3390/su7055819

46. A Comparative Study of Plasma-Treated Oxygen-Doped Single-Walled and Multiwalled Carbon Nanotubes as Electrocatalyst for Efficient Oxygen Reduction Reaction

Author:
Roopathy Mohan; Arindam Modak; Alex Schechter
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.13 pp. 11396-11406
ISSN:
2168-0485
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray photoelectron spectroscopy; batteries; carbon nanotubes; catalysts; catalytic activity; comparative study; cost effectiveness; electrochemistry; energy conversion; fuel cells; irradiation; moieties; oxygen; renewable energy sources; scanning electron microscopy; transmission electron microscopy
Abstract:
... The oxygen reduction reaction (ORR) is pivotal in renewable energy technologies, such as in fuel cells and metal–air batteries. Precious-metal-free electrochemical ORR is a critical component in designing cost-effective electrochemical energy conversion devices. We show here the surface modification of carbon nanotubes (CNT) through one-step oxygen plasma irradiation, which induces doping and char ...
DOI:
10.1021/acssuschemeng.9b01125

47. A Comparison of Ionic Liquids and Organic Solvents on the Separation of Cellulose-Rich Material from River Red Gum

Author:
Pobitra Halder; Sazal Kundu; Savankumar Patel; Mohammad Ramezani; Rajarathinam Parthasarathy; Kalpit Shah
Source:
BioEnergy research 2019 v.12 no.2 pp. 275-291
ISSN:
1939-1234
Subject:
Eucalyptus camaldulensis; Fourier transform infrared spectroscopy; X-ray diffraction; acetates; biomass; bioprocessing; biorefining; cost effectiveness; crystal structure; ethanol; industry; ionic liquids; lignin; methanol; porosity; scanning electron microscopy; spectral analysis; thermogravimetry
Abstract:
... With the aim of separating cellulose-rich material from river red gum, it was pre-treated with three ionic liquids (ILs), i.e. 1-butyl-3-methylimidazolium chloride ([Bmim][Cl]), 1-ethyl-3-methylimidazolium acetate ([Emim][OAc]) and 1-butyl-3-methylimidazolium acetate ([Bmim][OAc]) as well as with two organic solvents, i.e. methanol and ethanol. All ILs and organic solvents were able to remove more ...
DOI:
10.1007/s12155-019-09967-8

48. A Comprehensive Study on Chlorella pyrenoidosa for Phenol Degradation and its Potential Applicability as Biodiesel Feedstock and Animal Feed

Author:
Bhaskar Das; Tapas K. Mandal; Sanjukta Patra
Source:
Applied biochemistry and biotechnology 2015 v.176 no.5 pp. 1382-1401
ISSN:
0273-2289
Subject:
Chlorella pyrenoidosa; Fourier transform infrared spectroscopy; alkanes; biodiesel; biomass; carbon; cell membranes; feeds; feedstocks; high performance liquid chromatography; mass spectrometry; microalgae; phenol; protein content; remediation; scanning electron microscopy; specific growth rate; triacylglycerols; wastewater
Abstract:
... The present work evaluates the phenol degradative performance of microalgae Chlorella pyrenoidosa. High-performance liquid chromatography (HPLC) analysis showed that C. pyrenoidosa degrades phenol completely up to 200 mg/l. It could also metabolize phenol in refinery wastewater. Biokinetic parameters obtained are the following:growth kinetics, μ max (media) > μ max (refinery wastewater), K s(media ...
DOI:
10.1007/s12010-015-1652-9

49. A Continuous Hydrothermal Saccharification Approach of Rape Straw Using Dilute Sulfuric Acid

Author:
Wenchao Ji; Zhemin Shen; Yujuan Wen
Source:
BioEnergy research 2014 v.7 no.4 pp. 1392-1401
ISSN:
1939-1234
Subject:
Fourier transform infrared spectroscopy; bioethanol; biomass; cellulose; environmental factors; fermentation; fossil fuels; furfural; hemicellulose; hydrolysates; lignin; lignocellulose; reducing sugars; saccharification; scanning electron microscopy; straw; sulfuric acid; temperature; toxicity
Abstract:
... The fossil fuel crisis in the world has raised much concern on developing biomass energy. Fermentable sugars are an important product which can be converted to bioethanol. Although sulfuric acid saccharification is a good method for breaking lignocellulose biomass, efficiency is not well-promoted in dilute acid, as many fermentation inhibitors are co-produced. A continuous saccharification approac ...
DOI:
10.1007/s12155-014-9468-y

50. A DOPO-based phosphorus-nitrogen flame retardant bio-based epoxy resin from diphenolic acid: Synthesis, flame-retardant behavior and mechanism

Author:
Zhiyuan Chi; Zongwei Guo; Zice Xu; Mengjie Zhang; Ming Li; Lei Shang; Yuhui Ao
Source:
Polymer degradation and stability 2020 v.176 pp. 109151
ISSN:
0141-3910
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; bisphenol A; calorimetry; chemical structure; epoxides; flame retardants; heat; mechanical properties; nitrogen; phosphorus; photographs; resins; scanning electron microscopy; smoke
Abstract:
... Searching a renewable and flame-retardant alternative to bisphenol A epoxy resins is a necessary development trend. Diphenolic acid, a plant derivative, has been proven to be one of the sustainable alternatives to bisphenol A. However, how to impart the flame-retardant property to diphenolic acid thermosets is still a challenge to synthesize high performance intrinsic flame-retardant bio-based epo ...
DOI:
10.1016/j.polymdegradstab.2020.109151

51. A Detailed Molecular Dynamics Simulation and Experimental Investigation on the Interfacial Bonding Mechanism of an Epoxy Adhesive on Carbon Steel Sheets Decorated with a Novel Cerium–Lanthanum Nanofilm

Author:
Bahlakeh Ghasem; Ramezanzadeh Bahram
Source:
ACS Applied Materials & Interfaces 2017 v.9 no.20 pp. 17536-17551
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; Gibbs free energy; X-ray photoelectron spectroscopy; adhesion; adsorption; atomic force microscopy; carbon; ceric oxide; coatings; contact angle; energy; energy-dispersive X-ray analysis; epoxides; ferric oxide; ferrous oxide; iron; microstructure; models; molecular dynamics; roughness; scanning electron microscopy; solvents; steel; van der Waals forces; wet environmental conditions
Abstract:
... The influences of steel surface treatment by a novel cerium–lanthanum (Ce-La) nanofilm on the adhesion mechanism of an epoxy adhesive were studied through experimental and modeling approaches. The surface morphology and microstructure of the film deposited were characterized by atomic force microscopy (AFM), scanning electron microscopy (SEM) coupled with energy dispersive spectroscopy (EDS), and ...
DOI:
10.1021/acsami.7b00644

52. A Facile Electrodeposition Process for the Fabrication of Superhydrophobic and Superoleophilic Copper Mesh for Efficient Oil–Water Separation

Author:
Liu Yan; Zhang Kaiteng; Yao Wenguang; Zhang Chengchun; Han Zhiwu; Ren Luquan
Source:
Industrial & Engineering Chemistry Research 2016 v.55 no.10 pp. 2704-2712
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; atomic force microscopy; chemical composition; contact angle; copper; dodecanoic acid; engineering; gasoline; hexane; hydrophobicity; oils; petroleum; scanning electron microscopy; toluene; wettability
Abstract:
... A superhydrophobic and superoleophilic copper mesh with excellent oil–water separation efficiency was successfully fabricated via electrodeposition and then surface modification with lauric acid. The surface morphologies, chemical composition, and wettability were characterized by means of scanning electron microscopy (SEM), atomic force microscopy (AFM), X-ray photoelectron spectroscopy (XPS), Fo ...
DOI:
10.1021/acs.iecr.5b03503

53. A Facile One-Pot Method to Synthesize a Polypyrrole/Hemin Nanocomposite and Its Application in Biosensor, Dye Removal, and Photothermal Therapy

Author:
Hu Peng; Han Lei; Dong Shaojun
Source:
ACS applied materials 2014 v.6 no.1 pp. 500-506
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; adsorbents; adsorption; biosensors; catalytic activity; color; colorimetry; glucose; hydrogen peroxide; methyl orange; nanocomposites; nanomaterials; oxidation; peroxidase; pollutants; polymerization; scanning electron microscopy; therapeutics; transmission electron microscopy; ultraviolet-visible spectroscopy
Abstract:
... In this work, we introduced a facile method for the construction of a polypyrrole/hemin (PPy/hemin) nanocomposite via one-pot chemical oxidative polymerization. In this process, a hemin molecule serving as a dopant was entrapped in the PPy nanocomposite during chemical oxidative polymerization. Scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier transform infrared s ...
DOI:
10.1021/am404539j

54. A Facile Synthesis of Itaconic Acid Based Biodegradable Co-polyesters: An In-Vitro Anticancer Evaluation and Controlled Drug Delivery System

Author:
Udayakumar Veerabagu; Gowsika Jaikumar; Lu Fushen
Source:
Journal of polymers and the environment 2019 v.27 no.12 pp. 2756-2768
ISSN:
1566-2543
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; antineoplastic activity; biodegradability; breast neoplasms; carbon; catalysts; citrates; coatings; condensation reactions; crystal structure; differential scanning calorimetry; drug carriers; glass transition temperature; glycols; human cell lines; humans; inhibitory concentration 50; melting point; nuclear magnetic resonance spectroscopy; pH; polyesters; scanning electron microscopes; scanning electron microscopy; spectral analysis; stable isotopes; tamoxifen; titanium; toxicity; wide-angle X-ray scattering
Abstract:
... A series of aliphatic co-polyesters were prepared via one-step polycondensation reaction of itaconic acid, 1,4-cyclohexane dimethanol and diols using titanium tetraisopropoxide (TTIP) as a catalyst. The chemical structure of the repeating units present in the polymer chains were confirmed by FTIR, ¹H and ¹³C NMR spectral data. The glass transition temperature (Tg), melting temperature (Tₘ) and dec ...
DOI:
10.1007/s10924-019-01562-4

55. A Facile and Fast Approach To Coat Various Substrates with Poly(styrene-co-maleic anhydride) and Polyethyleneimine for Oil/Water Separation

Author:
Ganwei Zhang; Xinying Jia; Jiale Xing; Shusu Shen; Xiaoji Zhou; Jingjing Yang; Yongfu Guo; Renbi Bai
Source:
Industrial & engineering chemistry process design and development 2019 v.58 no.42 pp. 19475-19485
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; anhydrides; coatings; composite polymers; cotton fabric; crosslinking; emulsions; hydrophilicity; nylon; oils; polyethyleneimine; process design; scanning electron microscopy; stainless steel; thermoplastics
Abstract:
... Poly(styrene-co-maleic anhydride) (PSMA) and polyethyleneimine (PEI) are used to coat various substrates via a facile and fast process to improve their oil/water separation performances. Substrates including polyvinylidene fluoride (PVDF) microfilter membrane, cotton fabric, nylon mesh, and stainless steel mesh are initially coated with PSMA and subsequently with PEI to yield cross-linked copolyme ...
DOI:
10.1021/acs.iecr.9b03465

56. A Fe-OSA/Nafion composite film-decorated glassy carbon electrode as a sensor for detection of Pb(ii), Cd(ii) and Cu(ii)

Author:
Haitao Sha; Yunhai Wu; Yiang Fan
Source:
Analytical methods 2017 v.9 no.38 pp. 5618-5631
ISSN:
1759-9679
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; cadmium; copper; detection limit; electrochemistry; energy-dispersive X-ray analysis; glassy carbon electrode; heavy metals; lead; metal ions; pH; scanning electron microscopy; thermal stability
Abstract:
... A glassy carbon electrode decorated with Fe-OSA was successfully fabricated and its application in electrochemical detection of heavy ions was investigated. Fe-OSA was characterized by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectroscopy. The properties of glassy carbon electrode (GCE) before and after ...
DOI:
10.1039/c7ay01681f

57. A Fluorescence Resonance Energy Transfer (FRET) Biosensor Based on Zinc Oxide (ZnO) and Porphyrin for the Detection of Trimethylamine in Aquatic Products

Author:
Xue Gao; Yutong Liu; Yu Wang; Qiang Zhang; Xiuying Liu; Yiwei Tang; Jiangrong Li
Source:
Food analytical methods 2019 v.12 no.7 pp. 1585-1593
ISSN:
1936-9751
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; biosensors; detection limit; energy transfer; fish; fluorescence; nanomaterials; porphyrins; scanning electron microscopy; transmission electron microscopy; trimethylamine; zinc oxide
Abstract:
... Hierarchical zinc oxide (ZnO) nanomaterials have been successfully synthesized using a biotemplated method. The morphology and structure of the produced samples were characterized by means of SEM, TEM, XRD, FTIR, etc. The result showed that hierarchical ZnO nanomaterial retained the porous network structure of the template. Trimethylamine (TMA) in aquatic products was effectively detected by a flu ...
DOI:
10.1007/s12161-019-01488-6

58. A Food-Grade Approach to Isolate Crocetin from Saffron (Crocus sativus L.) Extracts

Author:
Anastasia Kyriakoudi; Maria Z. Tsimidou
Source:
Food analytical methods 2015 v.8 no.9 pp. 2261-2272
ISSN:
1936-9751
Subject:
Crocus sativus; Fourier transform infrared spectroscopy; X-ray diffraction; cost effectiveness; deoxycholic acid; encapsulation; esters; response surface methodology; saffron; scanning electron microscopy; thermogravimetry
Abstract:
... The present study proposes a food-grade approach for the isolation of the valuable apocarotenoid crocetin (CRT) from saffron extracts rich in crocetin esters. Its isolation involved optimization of saffron:solvent ratio (w/v) using response surface methodology (RSM) and encapsulation in deoxycholic acid (DCA) to form an inclusion complex (CRT-DCA). RP-HPLC-DAD was the major tool to monitor the eff ...
DOI:
10.1007/s12161-015-0111-0

59. A Green Technology for the Preparation of High Fatty Acid Starch Esters: Solid-Phase Synthesis of Starch Laurate Assisted by Mechanical Activation with Stirring Ball Mill as Reactor

Author:
Zhang Yanjuan; Gan Tao; Hu Huayu; Huang Zuqiang; Huang Aimin; Zhu Yuanqin; Feng Zhenfei; Yang Mei
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.6 pp. 2114-2120
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; additives; crystal structure; engineering; esterification; esters; fatty acids; mixing; scanning electron microscopy; solvents; starch; sustainable technology; viscosity; water uptake
Abstract:
... Starch laurate, a kind of high fatty acid starch ester, was directly produced by mechanical activation (MA)-assisted solid-phase synthesis (MASPS) technology with a customized stirring ball mill as reactor. The starch laurates with different degrees of substitution (0.0148–0.0412) were obtained under different reaction conditions. Fourier transform infrared spectroscopy confirmed that starch ester ...
DOI:
10.1021/ie403186h

60. A Hierarchical Model To Understand the Processing of Polysaccharides/Protein-Based Films in Ionic Liquids

Author:
Amnah Hadadi; John W. Whittaker; David E. Verrill; Xiao Hu; Luca Larini; David Salas-de la Cruz
Source:
Biomacromolecules 2018 v.19 no.10 pp. 3970-3982
ISSN:
1526-4602
Subject:
thermogravimetry; silk; surface area; biopolymers; scanning electron microscopy; theoretical models; crystal structure; modulus of elasticity; differential scanning calorimetry; Fourier transform infrared spectroscopy; simulation models; medicine; mechanical properties; biocompatible materials; molecular dynamics; water content; temperature; solubility; ionic liquids; prediction; biocomposites
Abstract:
... In recent years, biomaterials from abundant and renewable sources have shown potential in medicine and materials science alike. In this study, we combine theoretical modeling, molecular dynamics simulations, and several experimental techniques to understand the regeneration of cellulose/silk-, chitin/silk-, and chitosan/silk-based biocomposites after dissolution in ionic liquid and regeneration in ...
DOI:
10.1021/acs.biomac.8b00903

61. A High Performance Supercapacitor Based on Graphene/Polypyrrole/Cu2O–Cu(OH)2 Ternary Nanocomposite Coated on Nickel Foam

Author:
Asen Parvin; Shahrokhian Saeed
Source:
The Journal of Physical Chemistry C 2017 v.121 no.12 pp. 6508-6519
ISSN:
1932-7455
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; aqueous solutions; atomic force microscopy; capacitance; dielectric spectroscopy; electrochemistry; electrodes; energy density; energy-dispersive X-ray analysis; foams; graphene; graphene oxide; nanocomposites; nanoparticles; nickel; particle size; physical chemistry; pyrroles; scanning electron microscopy; sodium sulfate
Abstract:
... A simple and low-cost electrochemical deposition method is used to prepare reduced graphene oxide/polypyrrole/Cu₂O–Cu(OH)₂ (RGO/PPy/Cu₂O–Cu(OH)₂) ternary nanocomposites as the electrode material for supercapacitor application. First, graphene oxide–polypyrrole (GO/PPy) nanocomposite is electrochemically synthesized on Ni foam by electro-oxidation of pyrrole monomer in an aqueous solution containin ...
DOI:
10.1021/acs.jpcc.7b00534

62. A Highly Active and Stable Non-Platinic Lean NOx Trap Catalyst MnOx-K2CO3/K2Ti8O17 with Ultra-Low NOx to N2O Selectivity

Author:
Zhang Yuxia; Liu Dongsheng; Meng Ming; Jiang Zheng; Zhang Shuo
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.20 pp. 8416-8425
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; carbon dioxide; catalysts; chemistry; engineering; nitrates; nitrites; nitrous oxide; potassium carbonate; scanning electron microscopy; transmission electron microscopy; vibration
Abstract:
... A non-platinic lean NOx trap catalyst MnOx-K₂CO₃/K₂Ti₈O₁₇ (K₂CO₃ loading: 25 wt %) was prepared via successive impregnation, which exhibits a large NOx storage capacity (3.21 mmol/g), a high NOx reduction percentage (98.5%) and an ultralow selectivity of NOx to N₂O (0.3%). The catalyst was characterized by multiple techniques including XRD, SEM/HRTEM, EXAFS, FT-IR, CO₂-TPD and in situ DRIFTS. Exce ...
DOI:
10.1021/ie501034u

63. A MOF-derived ZIF-8@Zn₁₋ₓNiₓO photocatalyst with enhanced photocatalytic activity

Author:
Yanqiu Jing; Jianan Wang; Baohua Yu; Jin Lun; Yuyuan Cheng; Bin Xiong; Qiang Lei; Yongfeng Yang; Liangyuan Chen; Mingqin Zhao
Source:
RSC advances 2017 v.7 no.67 pp. 42030-42035
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; nickel; photocatalysis; photocatalysts; reflectance spectroscopy; rhodamines; scanning electron microscopy; silver nitrate; ultraviolet radiation; zinc oxide
Abstract:
... Today, metal doped ZnO exhibits good performances and attracts worldwide attention. In this paper, a ZIF-8@Zn₁₋ₓNiₓO photocatalyst was successfully prepared using MOF as precursor and AgNO₃ as catalyst. We explored the influence of Ni content on the photocatalytic activity of ZIF-8@Zn₁₋ₓNiₓO. The structure and properties of ZIF-8@Zn₁₋ₓNiₓO were characterized by XRD, SEM, FT-IR, BET, UV-vis diffuse ...
DOI:
10.1039/c7ra08763b

64. A Microscopic Study of Paper Decayed by Trichoderma harzianum and Paecilomyces variotii

Author:
Rushdya R. A. Hassan; Maisa M. A. Mansour
Source:
Journal of polymers and the environment 2018 v.26 no.7 pp. 2698-2707
ISSN:
1566-2543
Subject:
Fourier transform infrared spectroscopy; Paecilomyces variotii; Trichoderma harzianum; absorption; cellulose; chemical pulp; cotton; fungi; hydrolysis; hyphae; paper; scanning electron microscopes; scanning electron microscopy
Abstract:
... The current study is interested in evaluating the decay of cotton, Whatman and chemical pulp caused by Trichoderma harzianum and Paecilomyces variotii. The structural changes of the paper were evaluated by Infrared Spectroscopy (FTIR) and Scanning Electron Microscope (SEM). The SEM results show differences in hyphae colonization and paper decay patterns between studied species under the current st ...
DOI:
10.1007/s10924-017-1147-6

65. A Modified Nanoporous Silica Aerogel as a New Sorbent for Needle Trap Extraction of Chlorobenzenes from Water Samples

Author:
Ali Roostaie; Sirwan Mohammadiazar; Hasan Bargozin; Shokooh Ehteshami
Source:
Chromatographia 2018 v.81 no.4 pp. 649-655
ISSN:
0009-5893
Subject:
Fourier transform infrared spectroscopy; aerogels; chromatography; headspace analysis; ionic strength; microstructure; moieties; nanopores; scanning electron microscopy; silica; solid phase microextraction; sorbents; statistical analysis; temperature; thermal stability; thermogravimetry
Abstract:
... In this work, a modified nanoporous silica aerogel was used as a new sorbent for headspace needle trap extraction of chlorobenzenes from aqueous samples. The needle trap extraction is derived from solid-phase microextraction and the sorbent is inside the needle. The thermal stability and functional groups of the sorbent were studied by TG/DTA and FT-IR, respectively. The modified silica aerogels, ...
DOI:
10.1007/s10337-017-3456-2

66. A Mussel Mimetic, Bioadhesive, Antimicrobial Patch Based on Dopamine-Modified Bacterial Cellulose/rGO/Ag NPs: A Green Approach toward Wound-Healing Applications

Author:
Moumita Khamrai; Sovan Lal Banerjee; Saikat Paul; Anup Kumar Ghosh; Priyatosh Sarkar; Patit Paban Kundu
Source:
ACS sustainable chemistry & engineering 2019 v.7 no.14 pp. 12083-12097
ISSN:
2168-0485
Subject:
Escherichia coli; Fourier transform infrared spectroscopy; Lysinibacillus; Pseudomonas aeruginosa; Staphylococcus aureus; antibacterial properties; bacteria; bioadhesives; carboxylation; cellulose; composite films; composite materials; dihydroxyphenylalanine; dopamine; epithelial cells; fibroblasts; graphene oxide; human cell lines; lungs; moieties; mussels; nanosilver; nuclear magnetic resonance spectroscopy; scanning electron microscopy; tissue repair
Abstract:
... A mussel mimetic transdermal patch was prepared using bacterial cellulose (BC), a green resource derived from Glucanoacetobacter xylinus (MTCC7795). To impart the mussel mimetic property, dopamine (DOPA), a catechol-containing compound, was used to modify the isolated BC via an amidation reaction between the carboxylated BC and DOPA, and the end product was successively characterized by ¹H NMR and ...
DOI:
10.1021/acssuschemeng.9b01163

67. A Near-Infrared and Temperature-Responsive Pesticide Release Platform through Core–Shell Polydopamine@PNIPAm Nanocomposites

Author:
Xu Xiaohui; Bai Bo; Wang Honglun; Suo Yourui
Source:
ACS Applied Materials & Interfaces 2017 v.9 no.7 pp. 6424-6432
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; active sites; chemical elements; drugs; encapsulation; light scattering; nanocomposites; pesticides; pollution; polymers; scanning electron microscopy; temperature; thermogravimetry; transmission electron microscopy; ultraviolet-visible spectroscopy
Abstract:
... Controlled stimuli-responsive release systems are a feasible and effective way to increase the efficiency of pesticides and help improve environmental pollution issues. However, near-infrared (NIR)-responsive systems for encapsulation of pesticides for controlling release have not been reported because of high cost and load ability of conventional NIR absorbers as well as complicated preparation p ...
DOI:
10.1021/acsami.6b15393

68. A New Approach to Reducing the Flammability of Layered Double Hydroxide (LDH)-Based Polymer Composites: Preparation and Characterization of Dye Structure-Intercalated LDH and Its Effect on the Flammability of Polypropylene-Grafted Maleic Anhydride/d-LDH Composites

Author:
Kang Nian-Jun; Wang De-Yi; Kutlu Burak; Zhao Peng-Cheng; Leuteritz Andreas; Wagenknecht Udo; Heinrich Gert
Source:
ACS Applied Materials & Interfaces 2013 v.5 no.18 pp. 8991-8997
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; X-radiation; calorimetry; combustion; flame retardants; flammability; heat; maleic anhydrides; scanning electron microscopy; sodium dodecylbenzenesulfonate; thermal stability; thermogravimetry; transmission electron microscopy; xylene
Abstract:
... Dye structure-intercalated layered double hydroxide (d-LDH) was synthesized using a one-step method, and its intercalated behaviors have been characterized by Fourier transform infrared spectroscopy (FTIR), wide angle X-ray scattering (WAXS), scanning electron microscopy, thermogravimetric analysis (TGA), etc. As a novel functional potential fire-retarding nanofiller, it was used to prepare a poly ...
DOI:
10.1021/am4020555

69. A New Electrochemical Sensing Platform Based on Binary Composite of Graphene Oxide-Chitosan for Sensitive Rutin Determination

Author:
Majid Arvand; Atefeh Shabani; Masoomeh Sayyar Ardaki
Source:
Food analytical methods 2017 v.10 no.7 pp. 2332-2345
ISSN:
1936-9751
Subject:
Fourier transform infrared spectroscopy; chitosan; electrochemistry; electrolytes; glassy carbon electrode; graphene; graphene oxide; nanocomposites; nanosheets; pH; rutin; scanning electron microscopy; transmission electron microscopy
Abstract:
... A new, simple, and low-cost voltammetric sensor was designed by covering a layer of graphene oxide/chitosan (GO–Cs) nanocomposite on a glassy carbon electrode (GCE). The synthesized GO nanosheets and GO–Cs nanocomposite were characterized by different techniques such as Fourier transform infrared spectroscopy (FT–IR), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). ...
DOI:
10.1007/s12161-017-0794-5

70. A New Porous Chelating Fiber: Preparation, Characterization, and Adsorption Behavior of Pb(II)

Author:
Wang Jinnan; Cheng Cheng; Yang Xin; Chen Chen; Li Aimin
Source:
Industrial & Engineering Chemistry Research 2013 v.52 no.11 pp. 4072-4082
ISSN:
1520-5045
Subject:
EDTA (chelating agent); Fourier transform infrared spectroscopy; adsorption; calcium; carbon; contact angle; engineering; entropy; equations; hydrochloric acid; lead; nuclear magnetic resonance spectroscopy; polyethylene; scanning electron microscopy; sorption isotherms; stable isotopes; surface area; temperature
Abstract:
... A new porous chelating fiber (PE-MA-NN) was prepared with polyethylene for the removal of Pb(II) from water. Scanning electron microscopy (SEM), contact angle, Brunauer–Emmett–Teller (BET) surface area, Fourier transform infrared (FT-IR), and ¹³C nuclear magnetic resonance (¹³C NMR) were used to characterize PE-MA-NN. The batch kinetic study indicated that the adsorption of Pb(II) could be well-fi ...
DOI:
10.1021/ie302183s

71. A Novel Acetylcholinesterase Biosensor: Core–Shell Magnetic Nanoparticles Incorporating a Conjugated Polymer for the Detection of Organophosphorus Pesticides

Author:
Dzudzevic Cancar Hurija; Soylemez Saniye; Akpinar Yeliz; Kesik Melis; Göker Seza; Gunbas Gorkem; Volkan Murvet; Toppare Levent
Source:
ACS applied materials 2016 v.8 no.12 pp. 8058-8067
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; acetylcholinesterase; biofilm; biosensors; contact angle; electrochemistry; electrodes; immobilized enzymes; models; nanoparticles; paraoxon; polymers; scanning electron microscopy; silica; toxic substances; trichlorfon
Abstract:
... To construct a sensing interface, in the present work, a conjugated polymer and core–shell magnetic nanoparticle containing biosensor was constructed for the pesticide analysis. The monomer 4,7-di(furan-2-yl)benzo[c][1,2,5]thiadiazole (FBThF) and core–shell magnetic nanoparticles were designed and synthesized for fabrication of the biosensing device. The magnetic nanoparticles were first treated w ...
DOI:
10.1021/acsami.5b12383

72. A Novel Bio-based Polyaspartic Acid Copolymer: Synthesis, Structure and Performance of Degradation

Author:
Xiao-mei Wang; Hao-hao Ren; Yong-gang Yan; Mi-zhi Ji
Source:
Journal of polymers and the environment 2018 v.26 no.11 pp. 4201-4210
ISSN:
1566-2543
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; alanine; aspartic acid; composite polymers; culture media; gamma-aminobutyric acid; melting; pH; phenylalanine; phosphates; polymerization; raw materials; scanning electron microscopy; sodium chloride; soil; trypsin; viscosity; weight loss
Abstract:
... A novel bio-based polyaspartic acid copolymer, as a multifunctional polymer was fabricated via in-site melting polymerization method using L-aspartic acid, γ-aminobutyric acid, L-phenylalanine and L-alanine as raw materials. The synthetic conditions were studied in detail, and the structure and degradation assays of these copolymers were investigated by FT-IR, XRD, weight loss rate, pH values, int ...
DOI:
10.1007/s10924-018-1293-5

73. A Novel Cellulose Nanocrystals-Based Approach To Improve the Mechanical Properties of Recycled Paper

Author:
Salam Abdus; Lucia Lucian A; Jameel Hasan
Source:
ACS sustainable chemistry 2013 v.1 no.12 pp. 1584-1592
ISSN:
2168-0485
Subject:
Fourier transform infrared spectroscopy; acid hydrolysis; cellulose; chitosan; crosslinking; differential scanning calorimetry; ethanol; mechanical properties; nanocrystals; pulp; purification methods; recycled paper; roughness; scanning electron microscopy; thermogravimetry; washing
Abstract:
... The ability to introduce cellulose nanocrystals (CNs) into any of a number of single-component or composite applications is currently limited because they are difficult to efficiently isolate and in certain cases difficult to maintain homogeneously disperse. The current research introduces a novel purification technique and composite application for modified cellulose nanocrystal derivatives by us ...
DOI:
10.1021/sc400226m

74. A Novel Chemical Degumming Process for Ramie Bast Fiber

Author:
Xiu-Shan Fan; Zhong-Wen Liu; Zhao-Tie Liu; Jian Lu
Source:
Textile research journal 2010 v.80 no.19 pp. 2046-2051
ISSN:
0040-5175
Subject:
Fourier transform infrared spectroscopy; degumming; differential scanning calorimetry; fabrics; industry; polyvinyl alcohol; ramie; scanning electron microscopy; sodium carbonate; sodium hydroxide; sodium tripolyphosphate; surfactants; temperature; tensile strength; textile fibers; thermogravimetry
Abstract:
... A novel chemical degumming process for ramie fiber was developed, using sodium carbonate solution with poly(vinyl alcohol) (PVA) as an auxiliary surfactant and sodium triphosphate. Optimum performance for the degumming of ramie fiber was obtained with sodium carbonate concentration 30 g·L —¹, PVA concentration 2.2 g·L— ¹, sodium triphosphate concentration 6.0 g·L— ¹ and temperature 90 °C. The tens ...
DOI:
10.1177/0040517510373632

75. A Novel Composite Membrane from QPSU and SiO2 for Solid Alkaline Fuel Cell Applications

Author:
Rajangam Vinodh; Dharmalingam Sangeetha
Source:
International journal of green energy 2015 v.12 no.7 pp. 756-765
ISSN:
1543-5083
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; absorption; catalysts; electrodes; fuel cells; ion exchange; scanning electron microscopy; silica; thermal stability; thermogravimetry; transmission electron microscopy
Abstract:
... The goal of this work is to develop a novel composite membrane from quaternized polysulfone (QPSU) and silica (SiO ₂), to fabricate alkaline membrane electrode assemblies (MEAs) and to subsequently test the MEAs in 5 cm × 5 cm single cell configuration using Pt/C and Ag/C as anode and cathode catalysts, respectively. The composite membranes were characterized in terms of water absorption, ion exch ...
DOI:
10.1080/15435075.2012.738449

76. A Novel Copper(I)-Based Supported Ionic Liquid Membrane with High Permeability for Ethylene/Ethane Separation

Author:
Sun Yongli; Bi Hanrong; Dou Haozhen; Yang Huawei; Huang Zhaohe; Wang Baoyu; Deng Rong; Zhang Luhong
Source:
Industrial & Engineering Chemistry Research 2017 v.56 no.3 pp. 741-749
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; chlorides; copper; engineering; ethane; ethylene; hydrogen bonding; ionic liquids; liquid membranes; mass spectrometry; microporous membranes; nuclear magnetic resonance spectroscopy; permeability; quantum mechanics; scanning electron microscopy; temperature; thermoplastics; viscosity
Abstract:
... For the separation of an ethylene/ethane mixture, a novel copper(I)-based supported ionic liquid membrane (SILM) with high permeability has been fabricated. This SILM was prepared from a polyvinylidene fluoride microporous membrane impregnating the copper(I) based IL which formed by the cuprous chloride (CuCl) and 1-butyl-3-methylimidazolium chloride ([Bmim][Cl]). Scanning electron microscopy, att ...
DOI:
10.1021/acs.iecr.6b03364

77. A Novel Cross-Linked Magnetic Hydroxyapatite/Chitosan Composite: Preparation, Characterization, and Application for Ni(II) Ion Removal from Aqueous Solution

Author:
Van Thuan Le; Van Dat Doan; Dinh Duc Nguyen; Hoai Thuong Nguyen; Quoc Phu Ngo; Thi Kieu Ngan Tran; Hoang Sinh Le
Source:
Water, air, and soil pollution 2018 v.229 no.3 pp. 101
ISSN:
0049-6979
Subject:
EDTA (chelating agent); Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; ambient temperature; aqueous solutions; bones; cattle; chitosan; crosslinking; desorption; equations; green tea; heat production; hydrochloric acid; hydroxyapatite; ions; magnetism; nickel; pH; recycling; scanning electron microscopy; shrimp; slags; sorption isotherms; steel; wastewater
Abstract:
... In this study, a novel magnetic hydroxyapatite/chitosan composite (HA/Fe₃O₄/CS) prepared from steel slag, shrimp shells, and bovine bones, and then cross-linked with a green tea extract was used as an adsorbent for Ni(II) ion removal from aqueous solution. Various techniques (SEM, FTIR, XRD, VSM) were used to characterize the adsorbent. Batch experiments were conducted to investigate the adsorptio ...
DOI:
10.1007/s11270-018-3762-9

78. A Novel High-Performance Supercapacitor based on Chitosan/Graphene Oxide-MWCNT/Polyaniline

Author:
Mir Ghasem Hosseini; Elham Shahryari
Source:
Journal of colloid and interface science 2017 v.496 pp. 371-381
ISSN:
0021-9797
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; aniline; capacitance; chitosan; dielectric spectroscopy; graphene; nanocomposites; polymerization; scanning electron microscopy; sodium sulfate
Abstract:
... Chitosan/Graphene Oxide-MWCNT/polyaniline (CS/GM/PANI) ternary nanocomposite has been synthesized via in situ polymerization of aniline in the presence of CS/GM. The Morphology of nanocomposites was studied by Field emission scanning electron microscopy (FE-SEM), Fourier transform infrared (FT-IR) spectroscopy, as well as X-ray photoelectron spectroscopy (XPS). Furthermore, the supercapacitive beh ...
DOI:
10.1016/j.jcis.2017.02.027

79. A Novel Hybrid Polymer Network for Efficient Anticorrosive and Antibacterial Coatings

Author:
Fu Yaqi; Cai Mengsha; Zhang Eryong; Cao Simeng; Ji Peijun
Source:
Industrial & Engineering Chemistry Research 2016 v.55 no.16 pp. 4482-4489
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; aqueous solutions; atomic force microscopy; bacteria; catechol; chlorides; coatings; composite polymers; condensation reactions; dopamine; engineering; polyethyleneimine; polymerization; quaternary ammonium compounds; scanning electron microscopy; seawater; stainless steel
Abstract:
... By in situ simultaneous polymerization of dopamine and hydrolytic polycondensation of 3-aminopropyltriethoxysilane in an aqueous solution, a novel hybrid polymer network coating on stainless steel was formed. The polydopamine and silica hybrid polymer (PDSHP) adhered strongly on the surface of stainless steel. The PDSHP film provides active catechol and primary amine groups. Branched polyethylenim ...
DOI:
10.1021/acs.iecr.5b04818

80. A Novel Lignin/ZnO Hybrid Nanocomposite with Excellent UV-Absorption Ability and Its Application in Transparent Polyurethane Coating

Author:
Huan Wang; Xueqing Qiu; Weifeng Liu; Fangbao Fu; Dongjie Yang
Source:
Industrial & engineering chemistry process design and development 2017 v.56 no.39 pp. 11133-11141
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; aqueous solutions; coatings; hot water treatment; lignin; mechanical properties; nanocomposites; nitrates; polyurethanes; process design; raw materials; scanning electron microscopy; transmission electron microscopy; transmittance; ultraviolet-visible spectroscopy; value added; zinc; zinc oxide
Abstract:
... In this work, lignin/zinc oxide nanocomposites with excellent UV-absorbent performance were prepared through a novel hydrothermal method using industrial alkali lignin (AL) as raw materials. AL was first modified by quaternization to synthesize quaternized alkali lignin (QAL). The QAL/ZnO nanocomposites with different lignin contents were then prepared via a facile one-step hydrothermal method usi ...
DOI:
10.1021/acs.iecr.7b02425

81. A Novel Mesoporous SiO2 Material with MCM-41 Structure from Coal Gangue: Preparation, Ethylenediamine Modification, and Adsorption Properties for CO2 Capture

Author:
Hong Du; Liang Ma; Xiaoyao Liu; Fei Zhang; Xinyu Yang; Yu Wu; Jianbin Zhang
Source:
Energy & fuels 2018 v.32 no.4 pp. 5374-5385
ISSN:
1520-5029
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorption; carbon dioxide; cetyltrimethylammonium bromide; coal; drying temperature; hydrochloric acid; leaching; nitrogen; porous media; scanning electron microscopy; silica; silicon; surface area; thermogravimetry; transmission electron microscopy
Abstract:
... A novel mesoporous SiO₂ material (M-SiO₂) with MCM-41 structure was readily fabricated from the inexpensive coal gangue via a hydrothermal reaction in the presence of cetyltrimethylammonium bromide (CTAB) for CO₂ capture. On the basis of orthogonal experimental results, the optimum conditions for the preparation of M-SiO₂ were identified as follows: the SiO₃²– leaching of 21 g/L from coal gangue, ...
DOI:
10.1021/acs.energyfuels.8b00318

82. A Novel Microbial Biofilm for Bioremoval of Nickel from Aqueous Media

Author:
Mihiri Seneviratne; Meththika Vithanage; H. M. S. P. Madawala; Gamini Seneviratne
Source:
Bioremediation journal 2015 v.19 no.3 pp. 239-248
ISSN:
1547-6529
Subject:
Fourier transform infrared spectroscopy; adsorption; bacteria; biofilm; bioremediation; gardens; horticultural soils; ions; models; nickel; pH; scanning electron microscopy; serpentinite; soil fungi; sorption isotherms; titration
Abstract:
... This study evaluated the efficacy of a microbial biofilm in removing Ni ions in aqueous media. The biofilm was developed incorporating a garden soil fungus with a bacterium isolated from Ni-rich serpentinite soil. The biofilm was characterized using microscopy, scanning electron microscopy, Fourier transform infrared (FTIR) investigations, and Boehm and potentiometric titrations. Ni removal was de ...
DOI:
10.1080/10889868.2014.995374

83. A Novel Nanosilver/Nanosilica Hydrogel for Bone Regeneration in Infected Bone Defects

Author:
Zhang Shiwen; Guo Yuchen; Dong Yuliang; Wu Yunshu; Cheng Lei; Wang Yongyue; Xing Malcolm; Yuan Quan
Source:
ACS applied materials 2016 v.8 no.21 pp. 13242-13250
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; Gram-negative bacteria; biocomposites; bone formation; bone marrow; disease control; hydrogels; nanosilver; rats; scanning electron microscopy; stromal cells
Abstract:
... Treating bone defects in the presence of infection is a formidable clinical challenge. The use of a biomaterial with the dual function of bone regeneration and infection control is a novel therapeutic approach to this problem. In this study, we fabricated an innovative, dual-function biocomposite hydrogel containing nanosilver and nanosilica (nAg/nSiO₂) particles and evaluated its characteristics ...
DOI:
10.1021/acsami.6b01432

84. A Novel One-Pot Route for Large-Scale Synthesis of Novel Magnetic CNTs/Fe@C Hybrids and Their Applications for Binary Dye Removal

Author:
Jie Ma; Yao Ma; Fei Yu
Source:
ACS sustainable chemistry & engineering 2018 v.6 no.7 pp. 8178-8191
ISSN:
2168-0485
Subject:
Fourier transform infrared spectroscopy; Raman spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; adsorbents; adsorption; kinetics; magnetism; methyl orange; methylene blue; pollution; scanning electron microscopy; surface area; zeta potential
Abstract:
... Novel magnetic CNTs/Fe@C was prepared via an easy and one-pot method with a high specific surface area (186.3 m²/g) and characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectra, etc., and it was used for dye removal. Adsorption experiments showed significant differences between single and binary dye systems. The initial ads ...
DOI:
10.1021/acssuschemeng.7b04668

85. A Novel Organophosphorus Hybrid with Excellent Thermal Stability: Core–Shell Structure, Hybridization Mechanism, and Application in Flame Retarding Semi-Aromatic Polyamide

Author:
Lin Xue-Bao; Du Shuang-Lan; Long Jia-Wei; Chen Li; Wang Yu-Zhong
Source:
ACS Applied Materials & Interfaces 2016 v.8 no.1 pp. 881-890
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; aluminum; boehmite; calorimetry; chemical structure; flame retardants; hybridization; nanoparticles; nuclear magnetic resonance spectroscopy; oxygen; phosphorus; polyamides; scanning electron microscopy; smoke; spinning; stable isotopes; temperature; thermal stability
Abstract:
... An organophosphorous hybrid (BM@Al-PPi) with unique core–shell structure was prepared through hybridization reaction between boehmite (BM) as the inorganic substrate and phenylphosphinic acid (PPiA) as the organic modifier. Fourier transform infrared spectra (FTIR), solid state ³¹P and ²⁷Al magic angle spinning nuclear magnetic resonance, X–ray diffraction, and element analysis were used to invest ...
DOI:
10.1021/acsami.5b10287

86. A Novel Polyaniline-Coated Bagasse Fiber Composite with Core–Shell Heterostructure Provides Effective Electromagnetic Shielding Performance

Author:
Zhang Yang; Qiu Munan; Yu Ying; Wen Bianying; Cheng Lele
Source:
ACS Applied Materials & Interfaces 2017 v.9 no.1 pp. 809-818
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; aniline; bagasse; crystallization; electrical conductivity; electromagnetic interference; polymerization; polymers; scanning electron microscopy
Abstract:
... A facile route was proposed to synthesize polyaniline (PANI) uniformly deposited on bagasse fiber (BF) via a one-step in situ polymerization of aniline in the dispersed system of BF. Correlations between the structural, electrical, and electromagnetic properties were extensively investigated. Scanning electron microscopy images confirm that the PANI was coated dominantly on the BF surface, indicat ...
DOI:
10.1021/acsami.6b11989

87. A Novel Sonochemical Approach for Enhanced Recovery of Carbon Fiber from CFRP Waste Using Mild Acid–Peroxide Mixture

Author:
Das Mohan; Varughese Susy
Source:
ACS sustainable chemistry 2016 v.4 no.4 pp. 2080-2087
ISSN:
2168-0485
Subject:
Fourier transform infrared spectroscopy; byproducts; carbon fibers; crosslinking; epoxides; hydrogen peroxide; nitric acid; nuclear magnetic resonance spectroscopy; oxidation; polymers; scanning electron microscopy; temperature; tensile strength; wastes
Abstract:
... A novel sonochemical method is proposed for the recovery of carbon fiber from carbon fiber reinforced polymer (CFRP) composites by treatment with a mixture of dilute nitric acid and hydrogen peroxide in the presence of ultrasound. A maximum resin decomposition ratio of 95% could be obtained for the epoxy matrix. SEM and TGA data showed that the recovered fibers had very little or no epoxy resin an ...
DOI:
10.1021/acssuschemeng.5b01497

88. A Novel Transparent Cross-Linked Poly(methyl methacrylate)-Based Copolymer with Enhanced Mechanical, Thermal, and Flame-Retardant Properties

Author:
Jiang Saihua; Yang Hongyu; Qian Xiaodong; shi Yongqian; Zhou Keqing; Xu Haiyan; Shan Xueying; Lo Siuming; Hu Yuan; Gui Zhou
Source:
Industrial & Engineering Chemistry Research 2014 v.53 no.10 pp. 3880-3887
ISSN:
1520-5045
Subject:
Fourier transform infrared spectroscopy; composite polymers; copolymerization; crosslinking; engineering; gels; mechanical properties; nuclear magnetic resonance spectroscopy; phosphorus; polymethylmethacrylate; scanning electron microscopy; solid phase extraction; stable isotopes; temperature; thermal properties
Abstract:
... A novel cross-linked poly(methyl methacrylate) (PMMA)-based copolymer was first synthesized by bulk copolymerization of methyl methacrylate (MMA) and 1-oxo-2,6,7-trioxa-1-phosphabicyclo[2.2.2]octane-4-acrylate (PEPAA) at low temperature (80 °C), which is a facile and green method. The structure of PEPAA was confirmed by FTIR, ¹H NMR, and ³¹P NMR. The morphology and structure of copolymers were cha ...
DOI:
10.1021/ie4035863

89. A PVDF/PVB composite UF membrane improved by F-127-wrapped fullerene for protein waste-water separation

Author:
Gui-E Chen; Wei-Wei Zhu; Sun-Jie Xu; Zhen-Liang Xu; Qian Shen; Wei-Guang Sun; Qiong Wu; Xiao-Peng Zheng
Source:
RSC advances 2016 v.6 no.87 pp. 83510-83519
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; additives; asymmetric membranes; atomic force microscopy; bovine serum albumin; bromelains; contact angle; fouling; fullerene; heat tolerance; hydrophilicity; mechanical properties; molecular weight; ovalbumin; oxygen; permeability; porosity; scanning electron microscopy; thermogravimetry; thermoplastics; ultrafiltration; wastewater
Abstract:
... A novel polyvinylidene fluoride (PVDF)/polyvinyl butyral (PVB) ultrafiltration (UF) membrane was prepared via a non-solvent induced phase inversion (NIPS) method and blended with F-127-wrapped fullerene at different fullerene contents (0.000 wt%, 0.025 wt%, 0.050 wt%, 0.075 wt% and 0.100 wt%, weight of casting solution). The composite membranes were analyzed using SEM, FT-IR, AFM, XPS and TG. The ...
DOI:
10.1039/c6ra15441g

90. A Pd complex of a NNN pincer ligand supported on γ-Fe₂O₃@SiO₂ as the first magnetically recoverable heterogeneous catalyst for C–P bond forming reactions

Author:
Sara Sobhani; Zahra Vahidi; Zohre Zeraatkar; Samaneh Khodadadi
Source:
RSC advances 2015 v.5 no.46 pp. 36552-36559
ISSN:
2046-2069
Subject:
Fourier transform infrared spectroscopy; Lewis acids; X-ray diffraction; X-ray photoelectron spectroscopy; benzene; catalysts; chemical bonding; cross-coupling reactions; esters; ferric oxide; ligands; magnetism; palladium; phosphonates; scanning electron microscopy; silica; thermogravimetry; transmission electron microscopy
Abstract:
... A Pd complex of a NNN pincer ligand supported on γ-Fe₂O₃@SiO₂ as a new phosphine-free Pd catalyst was synthesized and characterized by different methods such as SEM, TEM, FT-IR, TGA, ICP, XRD, XPS and elemental analysis. The synthesized catalyst was successfully used as the first magnetically recoverable heterogeneous catalyst for the synthesis of arylphosphonates via C–P bond formation by a cross ...
DOI:
10.1039/c5ra03334a

91. A Peptide-Based Mechano-sensitive, Proteolytically Stable Hydrogel with Remarkable Antibacterial Properties

Author:
Baral Abhishek; Roy Subhasish; Ghosh Srabanti; Hermida-Merino Daniel; Hamley Ian W.; Banerjee Arindam
Source:
Langmuir 2016 v.32 no.7 pp. 1836-1845
ISSN:
1520-5827
Subject:
Escherichia coli; Fourier transform infrared spectroscopy; Gram-negative bacteria; Pseudomonas aeruginosa; X-radiation; amino acids; anti-infective agents; antibacterial properties; biocompatibility; chemical structure; enzymes; erythrocytes; fibroblasts; humans; hydrogels; image analysis; pH; phosphates; proteolysis; rheology; scanning electron microscopy; transmission electron microscopy
Abstract:
... A long-chain amino acid containing dipeptide has been found to form a hydrogel in phosphate buffer whose pH ranges from 6.0 to 8.8. The hydrogel formed at pH 7.46 has been characterized by small-angle X-ray scattering (SAXS), wide-angle powder X-ray diffraction (PXRD), Fourier transform infrared (FT-IR) spectroscopy, field-emission scanning electron microscopy (FE-SEM), high-resolution transmissio ...
DOI:
10.1021/acs.langmuir.5b03789

92. A Porous Material Made from Curdlan by EDTAD Functionalization Shows High Adsorption Capacity on Removal of Cu2+ and Zn2+ from Water

Author:
Tingrui Zhu; Deqiang Zhu; Jing Li
Source:
Journal of polymers and the environment 2020 v.28 no.5 pp. 1368-1377
ISSN:
1566-2543
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorbents; adsorption; beta-glucans; biocompatible materials; carbon; cations; chelation; copper; crosslinking; curdlan; desorption; esterification; ethylenediamines; ion exchange; moieties; nuclear magnetic resonance spectroscopy; pH; porous media; scanning electron microscopy; sorption isotherms; stable isotopes; thermogravimetry; wastewater; zinc
Abstract:
... A linear bacterial β-1,3-glucan, curdlan, was functionalized by ethylenediamine tetraacetic dianhydride (EDTAD) to form a porous insoluble material (Curd-E) in this study. Various technics, including FTIR, solid state ¹³C NMR, XRD, TGA, and SEM, were combined to determine the chemical and microscopic structure of the resultant. It's suggested that EDTAD esterified and cross-linked C6-hydroxyl grou ...
DOI:
10.1007/s10924-020-01691-1

93. A Preconcentration Procedure for Determination of Ultra-Trace Mercury (II) in Environmental Samples Employing Continuous-Flow Cold Vapor Atomic Absorption Spectrometry

Author:
Laleh Adlnasab; Homeira Ebrahimzadeh; Ali Akbar Asgharinezhad; Mahnaz Nasiri Aghdam; Ali Dehghani; Sousan Esmaeilpour
Source:
Food analytical methods 2014 v.7 no.3 pp. 616-628
ISSN:
1936-9751
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; adsorption; atomic absorption spectrometry; desorption; detection limit; green tea; hydrochloric acid; iron oxides; mercury; nanoparticles; pH; scanning electron microscopy; sodium chloride; thiourea; toothpaste; vegetables
Abstract:
... New functionalized magnetic nanoparticles as solid-phase sorbent were prepared and investigated for extraction of ultra-trace amounts of mercury from environmental samples. The Fe₃O₄magnetic nanoparticles functionalized with dithizone were characterized by Fourier transform infrared spectrometer. X-ray diffraction and scanning electron microscopy confirmed the size of nanoparticles. Effects of sev ...
DOI:
10.1007/s12161-013-9664-y

94. A Promising Superabsorbent Nanocomposite Based on Grafting Biopolymer/Nanomagnetite for Capture of 134Cs, 85Sr and 60Co Radionuclides

Author:
Hend A. El-saied; Ahmed M. Shahr El-Din; Botros A. Masry; Ahmed M. Ibrahim
Source:
Journal of polymers and the environment 2020 v.28 no.6 pp. 1749-1765
ISSN:
1566-2543
Subject:
Fourier transform infrared spectroscopy; Gibbs free energy; X-ray diffraction; absorbents; adsorbents; adsorption; biopolymers; cesium radioisotopes; cobalt; endothermy; enthalpy; hydrogels; iron; magnetism; models; nanocomposites; scanning electron microscopy; thermogravimetry; transmission electron microscopy; wastewater
Abstract:
... A new high-swelling multi-component superabsorbent composite Na-CMC-g-P(AMPS-co-AA-co-AM)/NanoFe₃O₄ (SANCHs) was successfully designed and utilized for effective removal of ¹³⁴Cs, ⁸⁵Sr and ⁶⁰Co radionuclides from radioactive wastewater. The structure and morphology of the superabsorbent composite have been mapped and characterized using different techniques (SEM, XRD, TEM, FTIR, and TGA). Superabs ...
DOI:
10.1007/s10924-020-01720-z

95. A Pyridyltriazol Functionalized Zirconium Metal–Organic Framework for Selective and Highly Efficient Adsorption of Palladium

Author:
Saba Daliran; Mahbobeh Ghazagh-Miri; Ali Reza Oveisi; Mostafa Khajeh; Sergio Navalón; Mercedes Âlvaro; Mansour Ghaffari-Moghaddam; Hojat Samareh Delarami; Hermenegildo García
Source:
ACS applied materials & interfaces 2020 v.12 no.22 pp. 25221-25232
ISSN:
1944-8252
Subject:
Fourier transform infrared spectroscopy; Suzuki reaction; X-ray photoelectron spectroscopy; adsorbents; adsorption; case studies; catalysts; coordination polymers; density functional theory; detection limit; energy-dispersive X-ray analysis; ions; pH; palladium; scanning electron microscopy; solid phase extraction; zirconium
Abstract:
... This work reports the synthesis of pyridyltriazol-functionalized UiO-66 (UiO stands for University of Oslo), namely, UiO-66-Pyta, from UiO-66-NH₂ through three postsynthetic modification (PSM) steps. The good performance of the material derives from the observation that partial formylation (∼21% of −NHCHO groups) of H₂BDC-NH₂ by DMF, as persistent impurity, takes place during the synthesis of the ...
DOI:
10.1021/acsami.0c06672

96. A Rapid and Specific Biosensor for Salmonella Typhimurium Detection in Milk

Author:
D. L. Alexandre; A. M. A. Melo; R. F. Furtado; M. F. Borges; E. A. T. Figueiredo; A. Biswas; H. N. Cheng; C. R. Alves
Source:
Food and bioprocess technology 2018 v.11 no.4 pp. 748-756
ISSN:
1935-5130
Subject:
Citrobacter freundii; Escherichia coli; Fourier transform infrared spectroscopy; Salmonella Typhimurium; cysteamine; detection limit; electrodes; food matrix; food safety; gold; immunosensors; polyclonal antibodies; scanning electron microscopy; whole milk
Abstract:
... This paper reports the application of an amperometric biosensor for rapid and specific Salmonella Typhimurium detection in milk. This device was developed from self-assembled monolayer technique on a gold screen-printed electrode, using cysteamine thiol. Polyclonal antibodies were oriented by protein A immobilization. The biosensor structure was characterized by cyclic voltammetry, Fourier transfo ...
DOI:
10.1007/s11947-017-2051-8

97. A Reusable Biosorbent Using Ca-Alginate Immobilized Providencia vermicola for Pd(II) Recovery from Acidic Solution

Author:
Jianping Xie; Ningning Feng; Runhua Wang; Ziwen Guo; Haigang Dong; Hao Cui; Haiyan Wu; Guanzhou Qiu; Xinxing Liu
Source:
Water, air, and soil pollution 2020 v.231 no.2 pp. 36
ISSN:
0049-6979
Subject:
Fourier transform infrared spectroscopy; Providencia; adsorption; biosorbents; biosorption; calcium alginate; desorption; energy-dispersive X-ray analysis; hydrochloric acid; industrial wastewater; metal ions; moieties; palladium; phosphates; scanning electron microscopy; sorption isotherms
Abstract:
... This study aimed to develop Ca-alginate immobilized Providencia vermicola as a reusable biosorbent to recover palladium ions from acidic solutions. To examine the adsorption characteristics and availability of Ca-alginate immobilized P. vermicola for Pd(II) recovery, several experiments such as SEM-EDX, FT-IR, isotherm, kinetics, fixed-bed columns, desorption, and reusability were conducted. The r ...
DOI:
10.1007/s11270-020-4399-z

98. A SEM Study of Unexplored Wax Microtubes Produced by Caterpillar Living on Common Banana Leaves

Author:
Salprima Yudha S.; Aswin Falahudin; Deni Agus Triawan; Morina Adfa
Source:
Micron 2019 pp. 102729
ISSN:
0968-4328
Subject:
Erionota thrax; Fourier transform infrared spectroscopy; bananas; carbon; energy-dispersive X-ray analysis; leaves; moieties; oxygen; polyethylene; scanning electron microscopy; spectral analysis
Abstract:
... The primary concern of this research is to perform a microscopic analysis of the natural wax covering banana skipper caterpillar. The scanning electron microscopic (SEM) analysis shows that the wax exhibits an unprecedented microtubular form, consisting of carbon and oxygen as main elements as revealed by energy dispersive X-ray (EDX) analysis. The Fourier Transform Infra-Red (FTIR) spectroscopic ...
DOI:
10.1016/j.micron.2019.102729

99. A SEM study on the use of epoxy functional vegetable oil and reactive UV-absorber as UV-protecting pretreatment for wood

Author:
S.K. Olsson; H. Matsunaga; Y. Kataoka; M. Johansson; J. Matsumura; M. Westin; E. Östmark
Source:
Polymer degradation and stability 2015 v.113 pp. 40-45
ISSN:
0141-3910
Subject:
Fourier transform infrared spectroscopy; Pinus sylvestris; epoxides; linseed; linseed oil; photostability; protective effect; scanning electron microscopy; soybean oil; vegetable oil; wood
Abstract:
... The present study investigates the ageing performance of a UV protective system for wood, comprising the reactive UV absorber 2-hydroxy-4(2,3-epoxypropoxy)-benzophenone (HEPBP) and epoxy functional vegetable oils (linseed and soybean oil). Scots pine samples of radial or cross-sectional surfaces were treated using a combination of the two components, or using only one of the oils. The treated samp ...
DOI:
10.1016/j.polymdegradstab.2015.01.005

100. A Salen-based covalent organic polymer as highly selective and sensitive fluorescent sensor for detection of Al3+, Fe3+ and Cu2+ ions

Author:
Pengyao Ju; Qing Su; Ziqian Liu; Xiaodong Li; Bixuan Guo; Wanting Liu; Guanghua Li; Qiaolin Wu
Source:
Journal of materials science 2019 v.54 no.1 pp. 851-861
ISSN:
0022-2461
Subject:
Fourier transform infrared spectroscopy; X-ray diffraction; X-ray photoelectron spectroscopy; aluminum; carbon; copper; fluorescence; ions; iron; nuclear magnetic resonance spectroscopy; polymers; protocols; scanning electron microscopy; schiff bases; stable isotopes; thermogravimetry
Abstract:
... A novel covalent organic polymer (Salen-COP) based on Salen-type Schiff base was synthesized by one-pot protocol involving the self-condensation of 3-formyl-4-hydroxyphenylboronic acid and the subsequent aldehyde–amine condensation with benzene-1,2-diamine. The Salen-COP was characterized by ¹³C CP/MAS NMR, Fourier transform infrared spectroscopy, thermogravimetric analysis, X-ray photoelectron sp ...
DOI:
10.1007/s10853-018-2821-3